Catalog tags

Hi,
I've opened this thread before, but now it's little bit different.

I've created field in catalog (tag) than i've connected with tag cloud via tag extension. With little "link" modification in tag cloud template and catalog filter everyhing works fine (user add tag to catalog item and then visitor can select tag from tag cloud and on extra page the items are filterd with module).

Now since the catalog item will member add via Frontend I'm wondering how to set things up that he will enter more than one tag? OK in the end I would need to modify tagcloud.php module but can this be solved without that? Now tag cloud module can look only into one table and one "raw" in db, so I can't just create more than one field in catalog.

Any idea would be more than great :geek: