You've got to realize that on the flop people will raise you on flush draws and on the turn some people will raise behind you with what they think is not the best hand but because

1) if they just call you on the turn, they will still have to call on the river(they have something like top pair weak kicker or second pair) and by raising you they get the free showdown or they improve on the river and they win an extra bet or you they get you to lay down a better hand [img]/images/graemlins/shocked.gif[/img]

and some people feal when their draw gets there they ought to raise even if it's a fairly low flush or the bottom end of a straight [img]/images/graemlins/cool.gif[/img]