Can you store recommandations 'tags' in a session?

[eluser]Christophe28[/eluser]
Hi,

I use encrypted cookies and the userdata of the session is stored in the database.

You know these recommandations on Amazon? When you have searched for a good JavaScript book and you visit Amazon next day there are all kind of JavaScript books as recommandations on the homepage.

I want to build something like that. I was thinking of storing the tags of pages users has visit and search queries in a column in the users table. But what to do with users who are not logged in? Can you store these tags in the session database? Something tells me this isn't the best solution ... Or maybe create a whole new table in the db, and store tags by IP address?

Has anyone experience with this, or a good solution for me?

Christophe