http://www.sc2armory.com/forums/topic/12431/page:4 (http://www.sc2armory.com/forums/topic/12431/page:4)
This guy is making a PHP extension to parse SC2Replays. The way he is doing it sounds very useful, because that extension should also be able to parse MAP information as well as all other SC2 files, since most of them are just renamed MPQ files. Just like all other Blizzard games since Diablo 2 I think. Maybe even earlier?
Still, I thought someone might like this extension for something, although I am not sure if it is done yet.
screplays.com (http://screplays.com) also has a starcraft 2 replay parsing engine.
there is also a starcraft 2 replay parser (http://screplays.com/forum/showthread.php?p=138) thread going on in the forums: