The ending wasn't great nor was it bad. It just felt like a big MEH. In the end everyone ended up with who they were really most socially suited for. Dan with Vanessa, Nate with Serena (you totally know that they're going to hook up or have some kind of romance there), Bart with Lily, Chuck with weird Amelia, Blair with even weirder corporate dude, and lil Jenny sewing up clothes like the good lil poor girl. I don't want to even mention the dad who goes on road since I was completely BORED with the whole Lily and Rufus story. They really lacked chemistry.
ANYWAYS, the fact that everyone ended up where they were supposed to from the start of the entire series was like BLAH. After rooting for Chuck and Blair, even eventually Dan and Serena...well I don't feel cheated but just bleh. After all the crazy season finales going on, I was surprised at how UNEXCITING and slightly annoying the finale was.