I'm at the OpenStreetMap Hack Weekend March 2014. Things done:
One of the things I'm really happy about is that Richard Fairhurst's addition of routing to the OpenStreetMap main website is really close to being ready - just a couple of tiny bugs and UI bits to iron out, and who knows, maybe it'll go live soon. I helped with a couple of little improvements and fixes.
The other thing is a conversation with new mapper Micky Allen, who is interested in mapping blue badge parking spaces. It turns out that in OSM we have a handy tag capacity:disabled=*, which is already used quite well in London, but we just need a bit more community effort to map these "blue badge" parking bays whenever we see them. Micky now has some ideas about how to extract these data from OSM, and he also has some ideas about encouraging the community to join in mapping them. I'll certainly try and remember to map them when I see them.
Next thing we've done this afternoon - some improvements to v2 of the HOT Tasking Manager. I've made it auto-unlock locked tasks after time (feature migrated from v1) as well as a couple of smaller tweaks.