I'm sure many of you already do what I do when reading various forums: click the "View New Posts" link, then open tabs for each of the articles you're interested in reading. Trouble is, many forums don't have a "Mark All Forums As Read" link on the results page of the new posts search, so you have to go back to the main page to clear all the posts.
To save a few clicks, I've added the "View New Posts" link as a bookmark in the Bookmarks Bar, so that I can just go directly to the list of new posts. I make tabs of all the threads I'm interested in, then I click on another bookmark I made of the "Mark All Forums As Read" link to clear the list.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030423095404631