I've been working on some fun Semantic Web experimentation today using CWM - which I've finally gotten working. 
I want to do a fun little Semantic Web hack with conference attendance. Basically, here's how it works - if you say that you went to a conference or event, and that conference happened in a certain place, you must have been to that place.
So, if I say "I went to Le Web 3", it means that I must have entered France to do so. If five people I know have all said they have attended that conference, they must all have been to Paris. We can use some fancy geo-location stuff to plot them all being there roughly at the time it happened last December.
And we can use some RDF rule-sets to imply country membership. Again, it's just a fun experiment. iso:visit is something you can use in RDF, so why not?
If you want to participate in this little unofficial game, put up a list of conferences you've attended somewhere on your blog with links back to that conference's website, and use rel="attended" as an attribute on each link. Maybe add Vote-Links if you wanna say how much they sucked (or perhaps ruled). That would be extra fun.
It's all POSH too, so if you like that, that's good.
Then post a comment here saying you did so. Then we can have some fun with screen scraping and CWM.
It's kind of an unofficial getSemantic project just so we can lark about with data.
