Interesting idea with the open source stock exchange. I always assumed that one can't simply launch a stock exchange, it has to be highly regulated and expensive to get into (just like not just anybody can start a bank). Not sure if that is the case, but the "open source" part made me think, perhaps in developing countries it could be useful. Perhaps people could just have local stock exchanges, and the government wouldn't even care.
Some interesting stuff there.<p>Not sure about the wiki - if it doesn't fully implement <i>everything</i> MediaWiki does, it may be too early to compare performance (80/20 thing). CouchDB on the other hand is <i>very</i> promising, as a whole new DB concept.