Comment by dangrossman

Add a WordPress plugin that replaces their comment system, the same way Disqus' does so, and you'll instantly work with over 1 in 5 sites on the web -- 80 million websites or so. If you really want this to take off, that'd be what gets the growth going and gives you a large enough userbase to figure out what's going to break and what features you need. It also addresses early adopter concerns about what happens if Komments goes away: a WordPress plugin can simultaneously store all the comments in the native format as well as in Komments so that it can be swapped out at any time.