Working the OSS Conferance Track

One thing we seem to be missing in the OSS world is some type of “conferance meta site” that keeps track of the various OSS conferences, the general topic, where and when they are, and when the call for presentation deadlines are. Right now there are a number of ways you can find out this type of information, but it’s all rather disjointed, especially if you’re into more than one discipline. This tends to be especially bad for database systems like [ PostgreSQL] and [ SQLite], who could be involved in a lot of conferences for other languages like [ Ruby] or [ PHP], but we’d have to know they are looking for speakers first. Anyone know of a good resource for this kind of information?