Dude, save for GAF (which is humorous in its trashing, if anything), nobody is saying its bad. Disappointment is the reoccurring theme. But if you liked the original, then this is the same caliber apparently, and go in with modest expectations. Spider-Man 2 has been hailed by many as the greatest comic book film ever, and this one is nowhere near that. I mean, it kind of sucks that Raimi couldn't hit that mark again, or even come close to it, but if you're going to shun what is being referred to as an entertaining film because its not as good as the previous installment - fuck that noise.
And regardless of what you think about Spider-Man, it got picked to pieces on GAF, especially for its pro-American PROPAGANDA and bridge sequence with the Goblin. I remember it being thoroughly trashed. It's a good, fun ride, but it doesn't rank as the best or one of the best.