Tiggerito - 4:59 am on Sep 18, 2010 (gmt 0) [edited by: tedster at 9:33 pm (utc) on Sep 20, 2010]
Google have proposed and implemented a solution to help them index AJAX based websites. I've experimented with it here: < sorry, no self-promotion >
It enables you to tell Google about page fragments (e.g. your dynamic products) and Google can directly send people to those fragments via a URL it indexes.
[edited by: tedster at 9:33 pm (utc) on Sep 20, 2010]