Porn Webmasters review
Porn Webmasters is a directory for people running adult websites. I'd start with the problem I needed to solve. Measuring how visitors use a page and tracking sales from referrals are different jobs, and the directory gives them separate places to start.
Search for the job before choosing the tool
The analytics search surfaces a web analytics category and entries for Google Analytics and Adobe Analytics. The directory also has a separate section for affiliate statistics. PornPlanner groups sites by what visitors want to browse, so I'd use it to see how a directory presents an audience-facing category. I'd use Porn Webmasters to look for the tools behind a site.
Read the entry and check the destination
The Google Analytics listing opens a review within Porn Webmasters and offers a link to the vendor. The EroAdvertising entry sends its external button through a different link domain. I'd use the review to make a shortlist and open the provider's own documentation before relying on a feature or an offer.
Anabel’s take
I'd start with one question about my site. If I wanted to see where readers stopped browsing, I'd look at analytics. If I needed to attribute sales to particular referrals, I'd start with affiliate tracking and compare the actual services from there.