Site marks are basically internal website bookmarks. That little red (or gray if unmarked) bookmark icon you may have astutely observed in the forum pictures designates whether or not a post is site marked.
Site Marks are an easy way to keep your Siliconfreaks specific bookmarks with you all the time. This way you don’t have to clutter up your browser’s bookmarks, or if you’re not in front of your computer, or can’t read something right this minute, you can mark something and have easy access to it later on.
