In the RFT that's coming out later this week, our music writers will weigh in on what they liked -- and didn't like -- about music in the year 2008. Various writers from around the Village Voice Media chain also weighed in on their jams, lists we'll be rolling out over the next week or so. Here's a sneak preview of these, my list of top ten pop songs.BY ANNIE ZALESKIPop music often gets a bad rap for being disposable or vapid, and in many cases that's true. (Katy Perry, Danity Kane and the Pussy