So I've found that finding a good writing blog is a hassle these days, so why not compile them all in a big thread? Here is the master list of writing blogs:

http://www.writerseven.com
http://www.copyblogger.com
http://www.obviouswriting.com
http://www.dailywritingtips.com
http://www.menwithpens.ca/
http://wwww.wordfull.com
http://www.copysnips.com
http://www.bigideablogger.net/