minecraft.rawrcritics.com
the only ip you will ever remember off by heart
This is twice as funny since you mispelled it

"rawcritics" not "rawrcritics"

Anyway, I've been playing on mc.dstrike.net for a while. It's Zan's server and has hey0 installed, which means grief protection (for real, not just warnings) for buildings and chests. Unfortunately there's a problem with both atm.
RC is running, but you need to downgrade your version to get in, Tyr is working on his mods to update to beta I suppose and doesn't want to put it up with a lot of bugs. He's also adding some, uhh...special features?
Dstrike is down entirely right now, even though hey0 was updated, there was some crash after running for an hour or two. No clue when that'll be worked out.
The lesson is, when Notch upgraded to beta, most non-vanilla servers (which would be most of them) had to wait for mod updates in order to run properly again. Which means at the moment a large number are probably down. Coupled with the timing, it may be a while before they all go up again. My suggestion would be to cruise the server list and try to find one that's running and worth a damn.