I saw this question and wanted to respond on behalf of Capterra.
We (Capterra) are actually not a paid links site. We have editorial reviews of all content which has to be approved and will often undergo change. We also do not directly link to software websites. The point of listing on Capterra has always been to reach, educate and help our software buyers, not to influence rankings on Google or other search engines. We have worked with thousands of software companies over the last 15 years, and not a single one has noticed/mentioned any change - positive or negative - in their search rankings due to their Capterra listing. I hope this helps! Please let us know if you have any additional questions or concerns.