I just wanted to touch upon to things. First the spam issue. By using trust ranking systems per user account one it is possible to get a pretty good control on these things. I’ve written somewhat on that on our user forums here:
Spurl.net forums: How to fight spam?

Second issue is more generally about the importance of tags. Although tags are great, I’m pretty sure that what will come out of all the talk about tagging and “folksonomy” will be more emphasis on “relative terms”, i.e. words that are highly relevant for the page, but they don’t have to come from tags, they can also come from users’ descriptions and snips (clippings), text in links on other websites that point to the pages, the text on the page itself and even from the page’s meta tags that may actually see the light again, thanks to the impact of social bookmarking and other similar methods in “validating” the quality of a page.

There’s a little on this here:
Spurl.net forums: Convert subcateogories into tags (at the bottom)

I plan to write more about it this week, to get these thoughts into the discussion.

Tagging gaat waarschijnlijk alweer een stap verder met een nieuwe generatie zoekmachines zoals Zniff, die de informatie uit social bookmarks software als Furl en Spurl doorzoeken.

What you see is the very first version of a new breed of search engin…