On Friday, it got to be too much for Alegre, a diarist on the flagship liberal blog DailyKos, who frequently writes in support of Senator Hillary Rodham Clinton. “I’ve put up with the abuse and anger because I’ve always believed in what our online community has tried to accomplish in this world,” Alegre wrote Friday evening. “No more.” Objecting to the tone of attacks against Mrs. Clinton and her supporters on the blog, the diarist called for a “writers strike.” --- SNIP --- Many feel that one of the other major liberal blogs, MyDD, tends to attract bloggers more favorable...