I couldn't send files, but received them just fine.
I was also able to see other people's pictures.

I couldn't actually add a contact though unless they wrote me first. I guess that's a bit of a bummer. Also some windows open in strange places.. like the online-notification - that pops up behind my dock. Not so useful. But it's still nice and I think it'll replace the official MSN client for the extra features - for the few people I haven't convinced to switch to AIM / latest ICQ ;)