I dont know about BWIN. On PokerStars and
888 Poker, which are the two sites, I play, the pattern is pretty similar. And the pattern is, that games are softest in the North and South American evening hours. Being situated in Europe I often take advantage of this by getting up early in the morning especially saturday and sunday. Then you have other people playing in Europe, who have not yet slept, and often they are drunk as well. And you have a lot of people playing in
canada and South America, who are very recreational players. I can only imagine, how great it was, when US players could also play on these international sites.