I don't think the downloadable version works on macs but they have an online version which probably would. Not listed here anyway,
http://www.compatiblepoker.com/Mac-Poker.mpr.rvl.htm. Apparently it works if you have virtual pc but I don't know anything about that.
Ladbrokes is an ok site, full of Scandinavian lagtards but they're generally pretty bad. They tend to have very good bonuses.
