Google Image Labeler
Using a game/competition to crowdsource labels.

Tag Gardening for Folksonomy Enrichment and Maintenance, by Isabella Peters & Katrin Weller (2008)
As social tagging applications continuously gain in popularity, it becomes more and more accepted that models and tools for (re-)organizing tags are needed. Some first approaches are already practically implemented. Recently, activities to edit and...

LibraryThing | Catalog your books online
LibraryThing catalogs your books online, easily, quickly and for free.

[pdf] Constructing Folksonomies from User-Specified Relations on Flickr, by Anon Plangprasopchok (2009)
Automatic folksonomy construction from tags has attracted much attention recently. (...) Instead of tags we propose to use user specified relations for learning folksonomy. We explore two statistical frameworks for aggregating many shallow individual...

Fred Wilson Dot VC - Mixx
I am Fred Wilson. This is my tumblog. I try to post a quote, a song, and a picture every day. Some days I actually do that. I also pull in links to some ... (via Google Alerts and AlertRank)

Flickr Opens an App Garden Full of Photo Tools [Photos]
There are a whole lot of mobile, desktop, and helper apps tied to Flickr. The team at the photo sharing service decided to make those apps easier to find and install by opening a free "App Garden" to...

Flickr Opens an App Garden Full of Photo Tools [Photos]
There are a whole lot of mobile, desktop, and helper apps tied to Flickr. The team at the photo sharing service decided to make those apps easier to find and install by opening a free "App Garden" to everyone. Like you might expect, the App Garden is...

Flickr Opens an App Garden Full of Photo Tools
There are a whole lot of mobile, desktop, and helper apps tied to Flickr. The team at the photo sharing service decided to make those apps easier to find and install by opening a free "App Garden" to everyone.Like you might expect, the App Garden is...

Listorious: Discover the Best Twitter Lists
Upcoming directory of twitter lists

Home | OpenCalais
"Calais is a rapidly growing toolkit of capabilities that allow you to readily incorporate state-of-the-art semantic functionality within your blog, content management system, website or application."

Listorious
for the very A of lists.

Flickr Adds People Tagging With Opt-Out Controls
If you use Facebook, you’re surely familiar with the option to tag the people in your photos. The feature both identifies them to viewers of the pic and lets them know a photo that includes them has been posted on the site.Today, venerable...