Many people see Web journals, or blogs, as alternatives to the mainstream media, but most Americans who run them do so as a hobby rather than a vocation, according to a report released on Wednesday. About 77 percent of blog authors, or bloggers, said they post to express themselves creatively rather to get noticed or paid, according to the report, released by the Pew Internet & American Life Project. The report also found that 37 percent of bloggers cited their life and experiences as their primary topics, while politics and government came in second at 11 percent.