Thought I'd stick something in here since I did a bit of investigation into it.
PokerChamps is basically the 'Gus Hansen' offering.
They currently have a 100% matchup bonus, which is released over like 10 weeks.
But what is interesting is that they have a 'Cashflow Bonus Program' , which is basically rakeback. Yes, that's right, they appear to credit you with a % of your rake back every Friday. Seems a bit suspect at first, but their rake structures look good, too. Like a max $1 rake for $1/$2 or below, max $3 for $5/$10, and these rates go down if there are less than 10 players, too.
The software is interesting. Basically the single client window is capable of holding up to 16 (yes that's right folks, SIXTEEN) tables with no overlapping. Of course your resolution and eyesight has to be good, but they also do other multiples like x2, x4 etc.
The per-game interface is nothing to rave about. There are no avatars, the colours are a bit drab, and it doesn't show you the preflop pot size building up (which I like) as I recall.
They also don't have a tremendously high number of players, but those that I saw were more loosey goosey than 'Stars type rocks (well, this is a 'Gus Site', lol).
Here's the link
https://secure.pokerchamps.com/pokerpub ... e=EVBILCUV
(and yes, this link IS tracked to BTP, so you'd be doing us a favour!)