While there are a lot of places to get your anime/manga fix, there's a few sites that stand out more to me than others. For the most part, I keep up with Naruto and Bleach through the manga, not the anime, with my favorite site: http://www.onemanga.com
One Manga's great, because you'll find a loooooot of manga, and there's no sign-in or subscription of any sort required. The scans come out on time (Fridays for Naruto and Bleach) and they're really clean and pretty high quality. I also occasionally go there for others, like Prince of Tennis and Claymore. They pretty much have any manga you want on there.