http://www.tinami.com/THE directory for online Japanese artists. It's not updated daily, but when it does update it adds pages of stuff. The letters on the left will show you the most recient sites added/updated in the directory.
http://www.saveloomis.org/They used to have the entire books scanned for viewing. Helped me improve my drawing immensely, but I still suck. XD Anyway, Loomis has some of the best drawing instruction books out there.
http://www.dokutero.com/Dokusatsu terroristo. I want to go to their lives, but the schedule seems impossible. Ah well.
http://elouai.com/The doll maker, good for boredom.