I would like to recommend bloglines to you. Bloglines is a free and fantastic website that keeps track of weblogs. Users can "subscribe" to weblogs in bloglines, and these appear in a list on a single page. Clicking on a weblog name in the list will show the latest posts in a pane on the right of the list. Bloglines keeps track of which posts you've read, and will highlight the weblog when new posts.
It saves loads of time, as you don't have to visit all the websites separately: bloglines aggregates it all, and lets you know which ones have new content, and which haven't changed since your last visit.