why Biden is so low-profile not like Palin?

why Biden is so low-profile not like Palin? i always see Palin appears in TV shows and news,but seldom see Biden appear in Public occasion.Why?.....

Biden is a VP candidate. VP candidates are generally low-profile because no one really cares about them.

Palin is all over the TV because she is so controversial. She's a young, inexperienced woman with rather extreme political views from a state without many people that's a thousand miles away from the rest of the country. Every one of those facts makes her a big headline.

I guess because the press said so
She is more news than him, possibly a good move to get one party more limelight, but only time will tell

maybe it is a wrong choice for McCain to choose Palin for his running mate.

I dunno. I think it may have been the right choice. The constant headlines about Palin seem to have energized McCain's whole campaign and taken some of the fervor about "young" and "different" away from Obama.