... the trend in American pop/rnb music to use more catchy melodies, Autotune on the vocals and synthesizers? The last couple of years, pop/rnb in the US turned more and more to dance music. The last months it's moving towards a climax, 'everyone' is doing it right now 
Some examples:
Lady Gaga ft. Space Cowboy & Flo Rida - Starstruck
[YOUTUBE]http://www.youtube.com/watch?v=FMgeR0EJjZA[/YOUTUBE]
Kanye West - Love Lockdown
[YOUTUBE]http://www.youtube.com/watch?v=h2M9YHATH2Q[/YOUTUBE]
Kanye West - Heartless
[YOUTUBE]http://www.youtube.com/watch?v=6hUgUPlQp0Y[/YOUTUBE]
Chris Brown - Forever
[YOUTUBE]http://www.youtube.com/watch?v=t9kobI4YoMw[/YOUTUBE]
T-Pain ft. Chris Brown - Freeze
[YOUTUBE]http://www.youtube.com/watch?v=hGeMHCUKkhw[/YOUTUBE]

especially with Kanye West - Love Lockdown!



-edit- ok now it works