Get new posts for unregistered users if cookied and at site in past

[Paul]

Hi all

I did a quick search and didn't see anything like this on here already, so I figured I'd give it a shot.

My forum has many unregistered users that prefer anonymity and feel safer not registering. I'd like to be able to show them any new posts since their last visit if they've been to the site before and the timestamp on their cookie is in the past.

I'd like a hack that would show a link to "See all new posts since your last visit" (using search.php?action=getnew) ONLY if the timestamp on their cookie is in the past. (If this is their first visit, I don't want to show them the link.)

Is this feasible? Would this work? Any pointers on how to do it? It doesn't seem like that much work, considering the getnew function is already built in and that vbulletin is already getting the time from the cookie (as displayed in "Your last visit was on")

Thanks!
Paul