i read quite a few online mangas, and a few OELMs, these are my faves;
Megatokyo
Aoi House - inked by same person as Love Hina
Clone Manga - quite a few on this site actually
beware the elfin leid and sakura fanfics o___0
5ideways
Friendly Hostility
Boy Meets Boy a lil yaoi if you didnt guess
Seraph Inn - beautiful art ^^
Chugworth Acadamy
Guests in Purgutory
Myralice
i set all the links the most recent posts, sorry, you'll have to delve into archives yourselves
i read a whole lot more, but i just dont have a life