There are so many sources for info and listening out there now...
Plenty of listening at:
http://epitonic.com/
http://betterpropaganda.com/
http://insound.com/
Prominent online contemporary/indie rock+ zines:
http://pitchforkmedia.com/
http://stylusmagazine.com/
http://dustedmagazine.com/
These zines love to do lists, which can certainly be useful for overviews and browsing, e.g.
http://www.pitchforkmedia.com/top/2000-04/
Lots of mp3 blogs out there, I don't have specific suggestions, but you can find them.
Also, browse the thread
Recent pop
I have plenty of my own favorites, but without knowing your tastes, not worth listing atm.