I assume the 100Th mine will eventually solo-mine, but the regular dividents at this stage would suggest pooled mining, which pool is in use ?
BTC Guild was the guess as of a couple pages back. User 50274 is now up to first place, with close to 20 TH.
3.73 x 24 as daily mining income from what it looks like right now, so around 12-14 TH online it seems.
Looking at blockchain addressess it may be a user 50274 at btcguild. 15TH/s 2nd place. It's low user number (but <40 blocks found) so it may be an old Dave account.