[andrew_s1]

3sixty, I’d strongly recommend not doing it that way. ISTM that it’s far better if you store this info server-side, not client-side: it’s information that’s specific to the logged-in user, not to the browser they’re logged in from. I wouldn’t want to see posts marked as new, that I’d already read, just because I was using a different browser or a different machine. Big cookies harm browser-side performance, too.

Yes, I’m interested in working on extending buddypress’s forum capabilities. Here’s my work in progress: http://andrewsinlondon.wordpress.com/