Play with the pros! Full Tilt Poker is taking a shot at the big time. So far they've been doing almost everything right, and are now one of the top three sites in terms of active players.
They've got the big name endorsements. More than that, people like Chris "Jesus" Ferguson, Howard Lederer, Jennifer Harman, and several other top pros are actually involved with running the company. They also provide a public face,writing weekly poker advice emails for the players and playing on the site quite frequently. These guys know poker, and they know what players want. They've hired some quality support staff, and they don't mess around with cashouts.
The software is a nice balance between cartoony and boring. For the record,I'm one of several monkeys. A very nice feature is "put me here", allowing you to choose exactly where you want your seat displayed in the window. This makes multitabling on a small monitor a breeze (I can rotate the tables so all my seats are visible at once - this way I can keep track of which tables I have cards at). They also offer a "pot" sized button for No Limit (and Pot Limit I assume) which makes correct bet sizing much easier. It runs fast, and even on my clunker, I can play three tables at once. Full Tilt is also the only medium sized or bigger site that offers Razz (lowball stud), HORSE (Holdem, Omaha, Razz, Stud, Stud High Low) tournaments.
The player pool is a little tougher than some sites for the moment, since it was poker geeks who first got excited by a heavily player-influenced site, but the stars are drawing a steady flow of fish to the room. Promotions like "win a piece of Jesus' WSOP winnings" are a definate draw.
Full Tilt Poker are doing well so far, and I really hope they grow. I love the software, and their seemingly friendly attitude to the players (sometimes, especially at casino-run skins, it feels like we players are an inconvenience, or the enemy). To top it all off, Full Tilt also offer a very nice bonus (and it clears even at micro limits, so everyone is happy).