Here are some great websites focusing on some great bands.

Although these sites are not official/run by the artist or management, they are a great source of news, photos, videos, and forums.

Rilo Kiley

RiloKiley.net

Rilo Kiley

The Like

ILiketheLike.com

Rooney

Mastedonia.com

Rooney Band Photo

Uh Huh Her

UhHuhHerFan.com

Leisha

Avril Lavigne

AvrilBandaids.com