5. The Requisite Lil Wayne Feature
The only logical explanation for this trend is that label honchos have issued a mandate stating that no hip-hop album will be released without at least one Lil Wayne collaboration. Wayne has had his share of brilliant moments. In fact, when he's sharply focused he can be deadly ("Dr. Carter," for instance). However, there are hundreds of other remarkable artists that are equally capable of boosting your stocks. Seek them out and your audience will reward you for the unique experience. The Roots have been doing this consistently for over a decade.
4. Directional Dance Songs
Please stop telling me to throw my hands in the air and do the "stanky legg" on the dancefloor. If I find the song compelling enough I'll shake it like a Polaroid picture. Directional dance songs are corny and need to be permanently retired from hip-hop.
3. Making it Rain
Making it rain is a way of expressing affection for exotic dancers at the club. You really don't need me to go into a 2000-word epistle on what makes this trend ridiculously lame. Anyone still making it rain in 2009 needs to take Jay-Z's advice and get off that.