I like this idea, but there are a few practical issues.
1) What about ABP users who run a "non-standard" browser, such as SeaMonkey?
I think this problem could be resolved if this option only accepts names of browsers explicitly listed on the homepage, and detects if the installed ABP is "Adblock Plus for (browser named on homepage)".
2) Some of these "browser-specific issues" may result from user-agent sniffing rather than a bug with the browser itself. How do you think browsers with altered user-agent strings (i.e. Firefox with a Chromium user-agent string) should be handled?