I also use picassa & the beauty of that is you can ,load right into there off the memory card, crop in there sharpen etc & save the pic, then load into photobucked your saved piccies , then go back to picassa & delete all the saves you made & effectivly crop again the same pic but a different area of it, then back to photobucket & its amazing how many different pics you can get from 1 photo
the beauty of it is picassa & photobucket cost bugger all