Reign of Gaming

Elementz new site. Has multiple blogs as well as his very popular tier lists.

ColbyCheeZe

Gaming comentaries and podcasts.

Team SoloMid

Extensive site with many different blogs and livestream links

Mobafire

League of Legends Strategy Builds & Guides. Good reference for champion stats.

Leaguecraft

LoL database with custom skins, builds, wallpapers and UI mods.

League of Legends Wiki

Great reference tool.