According to
http://sourceforge.net/project/stats/?group_id=34373
MediaWiki is nearing 100,000 file downloads (this should include only files from the Releases section, according to someone on irc.slashnet.org's #sourceforge channel). The SourceForge project itself is almost 4 years old now. Would it be a good idea to put out a press release when we hit a 100K milestone? SF warns that the numbers may be inaccurate, but then again, it's just PR anyway, so I don't know how much that matters.
Regards,
Erik