Using a badly configured (or badly written) browser add-on for blocking content.

There is no official GameFAQs app, and we do not support nor have any contact with the makers of these unofficial apps. Continued use of these apps may cause your IP to be blocked indefinitely. This triggers our anti-spambot measures, which are designed to stop automated systems from flooding the site with traffic. Using GameFAQs regularly with these browsers can cause temporary and even permanent IP blocks due to these additional requests. The most common causes of this issue are:

Your IP address has been temporarily blocked due to a large number of HTTP requests.