I'm afraid you are reading too much into this. A static list of most popular extensions reinforces the popularity of those top extensions over and over. There is no grand conspiracy to kill off or discourage adblocking extensions, only to promote as much variety in the ecosystem as possible. If they wanted to kill it off, they would have just gone and removed them from the gallery and posted a TOS update as they did with YouTube downloaders:<p><a href="http://blog.arpitnext.com/2009/12/google-rejected-youtube-downloader-extension.html" rel="nofollow">http://blog.arpitnext.com/2009/12/google-rejected-youtube-do...</a>