I've been playing bingo online for about 3 years now, and I've tried out most of the big sites. My current favourite site is Moon Bingo. The reason why I choose to play here and not on other sites is because the chat team- Swan, Mad, Shelley, Samma and the rest of them are really fab and caring. There are loads of players who repeatedly come back to the site- which makes it feel like a community.
When I joined the welcome offer was get £30 when you put in £10. Therey've just changed the welcome offer to £20 free plus a go on their Kachinga game, where everyone gets £10 up to £10,000 extra cash. With this new offer all players get at least £30 but some get a lot more, so it's very worthwhile joining.
Moon Bingo runs 75 ball bingo and 90 ball bingo games, as well as lots of online slot machines. My favourite one is Double Ducks, because I won over 2 tohusand quid on it, but lots of the games are good. You can also play slots when you are playing bingo games.
You can only withdraw from moon bingo oince you've paid in £30, which is annoying, but I have won a lot more than that over the last two years. The only other annoying thing is that sometimes the site has technical troubles and I can't log in for a few minutes at a time.
Generally I really recommend Moon Bingo. The payouts are good and the team are nice.