Sorry to say, but in my opinion: in the Pop music world she is now a loser. When she did her big entrance on MTV rewards, she should of at least try to look, like she actually cares, what she is doing on stage...
With that performance she did really bad for herself

i am talking about this:
YouTube - Britney Spears - Gimme More VMA 2007 LIVE
She WAS a top entertainer before; there is no doubt in that. Look at her any shows, or videos, or live performances... Tons of people was in the line to get to her concerts.
It seems, like she cant get on the straight line anymore. She is confused, she does not know, what she wants from her life. All her hair cuttings, and tattoos, and her scandals in private life... She needs to straighten up herself, before 'coming back'.