Project Cloverfield has compiled the blogs from all the characters' MySpace pages.
If you want to stay updated with the Myspace blogs that belong to the 1-18-08 cast, you can subscribe to each blog separately. However, if you would like to subscribe to just one feed that pulls in all seven blogs, you can subscribe to http://feeds.feedburner.com/projectcloverfield/myspace (alternatively you can add this syndicated feed: 11808blogs to your livejournal friends list.)
If you do not want to subscribe, but would rather just view on occasion, you can visit feeder.projectcloverfield.com/MyspaceBlogs/. However, do note that the timestamps that are being shown at Feeder are the actual timestamps that these entries were originally created. The dates that are posted at the blogs itself have been edit (backdated) to appear as if though they were posted months upon months ago.
There has also been a lot of talk about the significance of these MySpace profiles. Could the characters themselves give us clues to what this movie is about? While it's certainly possible, this blogger thinks the characters are as clueless as we are.