I'm going to write a custom forum for a website of mine using PHP, and I'm looking for any insight on the best way to track unread posts in it. I'm not looking for code, but rather ideas. What is the best way to track, in your opinion, the posts the user has/hasn't read since their last login? I'm sure I'll have to store the information in a cookie somehow, but am unsure of the process and logic I'd have to implement. Thanks for any help in advance!