Review site ads are a category traffic bet, not a channel decision. Check the traffic before you check the pricing.
G2 ads for B2B, and the equivalent placements on Capterra, are worth buying when your software category already has real buyer traffic on those sites and you are selling into a category where most new customers are switching off an incumbent. If your category page is quiet, no amount of budget or creative fixes that, and the money belongs in branded search defense or in your best Google Ads campaigns. This is written for B2B marketing leaders at mid-market and enterprise software companies who keep getting the same question from their board or their sales team: should we be advertising on the review sites?
The question comes up constantly right now, and it is not because review sites got better. It is because organic traffic is getting eaten by AI answers, and marketing leaders are looking for places where in-market buyers still gather in one spot.
What you are actually buying on G2 and Capterra
You are buying placement in front of someone who is already comparing vendors in your category. G2 sells category page placement, competitor profile placement, and comparison page placement, plus the intent data that shows which companies looked at your profile or your competitor's. Capterra and the rest of the Gartner Digital Markets properties sell a similar shape of inventory, usually priced per click by category.
The inventory breaks down into a few placement types:
→ Category page placement, at the top of the list a buyer is scanning.
→ Competitor profile placement, so you appear on the page of the vendor you lose to.
→ Comparison and alternatives pages, which is where a shortlist gets cut down.
→ Intent data on the accounts doing that research, sold separately.
That is a narrow, deep piece of the funnel. A person on a category page is not learning what the software does. They have a shortlist and they are picking.
Compare that to a Google search for a problem phrase. Search intent covers everything from a person who just learned the category exists to a person who is renewing next month. Review site intent is almost entirely the second group.
That concentration is the whole argument for the channel. It is also why the channel has a hard ceiling.
Ready for paid ads that pay off?
Book your free auditThe number that decides it is your category page traffic
Before you look at a rate card, find out how many people visit your category page each month. Ask the rep for the category traffic figure and the click volume available at the top placement. They have it. If they will not give you a straight number, that itself is the answer.
A category with tens of thousands of monthly visitors can support a real always-on program. A niche category with a few hundred visitors a month cannot, no matter how good your profile looks or how many reviews you have collected.
The failure I see over and over is a team buying placement in a category too small to produce meaningful volume, then spending three months debating creative and profile optimization when the honest problem is that only 200 people saw the page.
There is no creative fix for an empty room.
Why a few hundred dollars a month is not a test
Teams almost always want to start review site ads small. A few hundred a month, see what happens, expand if it works. That instinct is right for most channels and wrong for this one.
At that budget you are buying a handful of clicks in a bottom-funnel category. You might get one lead. You might get zero. Either result tells you nothing, because the sample is too thin to separate a bad channel from a slow month.
The accounts I have seen produce steady lead flow from review site placement are spending real money there, at a level comparable to a secondary search channel, not to a line item. If review sites deserve a place in your paid mix, they deserve enough budget to generate a readable result within one quarter.
If you cannot fund that, do not run a token version. Put the money into the channel where the same dollars produce a decision you can actually read. Our view on how to move budget between paid channels sits in paid media budget allocation, and it applies here directly.
When review site ads beat another dollar in Google Ads
There are four situations where I would take review site placement over more search budget.
1.) Your category is switch-heavy. When most new customers already own a competing product, the comparison page is where the deal is decided, and you want to be on it.
2.) Your Google Ads account is already at the top of impression share on your core commercial keywords. More budget there buys you worse queries. Review sites give you a different pool of the same buyer.
3.) Competitors are outranking you on the category page and your sales team hears about it. Reps losing deals to a vendor listed above you is a real cost that does not show up in your ad platform.
4.) You need the intent data more than the clicks. For an account-based motion, knowing which companies compared you against a specific competitor last week is worth more than the traffic itself, and it feeds outbound and retargeting.
When to skip it
Skip it when your category page is thin. Skip it when your product creates a new category, because there is no shortlist to appear on yet. Skip it when your review count is far behind the leaders, since paying to send buyers to a page where you look worse than the alternatives is an expensive way to lose.
And skip it when your branded search is under attack. If competitors are bidding on your brand name and taking clicks from people who are specifically looking for you, that is cheaper traffic with higher intent than anything a review site will sell you. Defend the brand first.
The same discipline applies to every new placement that shows up promising in-market B2B buyers. We reached the same conclusion about ChatGPT ads for B2B, for the opposite reason: the traffic was plentiful and the intent was not there. Review sites are the mirror image, with real intent and limited traffic.
How to run the test so the answer is usable
1.) Get the category monthly traffic and available click volume in writing before you commit to anything.
2.) Set the budget at a level that will produce at least 40 to 50 clicks a month at the quoted cost per click. If your category cannot deliver that, stop here.
3.) Fix the profile first. Buying traffic to a profile with old screenshots and 12 reviews wastes the placement.
4.) Send the clicks to a page built for someone who is comparing, not to your homepage. Comparison-stage traffic needs migration effort, implementation timeline, security posture, and pricing clarity above the fold.
5.) Tag every link with its own campaign parameters so review site traffic never gets mixed into a generic referral bucket in your reporting.
6.) Run it for one full sales cycle plus 30 days before judging it. In B2B this is usually a quarter minimum.
7.) Judge it on opportunities created, not on lead count. Review site leads should close at a higher rate than search leads. If they do not, the placement is reaching the wrong part of the category.
What good looks like
Review site placement earns its slot when it produces a lower cost per opportunity than your non-branded search campaigns, or when it wins deals against a specific competitor you were losing to. Those are the two outcomes worth paying for.
A lower cost per lead alone does not count. Neither does a bump in profile views. If sales cannot point to deals that came through it, you have bought a listing, not a channel.
One more thing that surprises people: review site ads often perform best for the vendor in second or third place in a category, not the leader. The leader already gets the clicks organically. The challenger is the one who benefits from being seen next to them at the moment of comparison.
Look up your category traffic this week and ask your sales team how many recent losses mentioned a review site shortlist. Those two answers decide the question faster than a pilot budget will. If both point in favor, fund it properly through our other paid channels work; if they do not, put the money back into B2B Google Ads and defend your brand terms. G2's own documentation on G2 Ads placements is the fastest way to see exactly what inventory you would be buying.
