Brian Dear imagines a search engine where all user-generated tag information is searchable - an engine that confederates the various nations of Flickr, iTunes, etc. Neat idea, and certainly another step toward the semantic web vision.In the comments an imporant observation is made in that spammers are already getting wind of this free exchange of meta data and will soon find ways of tagging their spam of phony adds and other junk so that it gets found by the search engines. This would still be a problem for taggr since you would start to get spam in your reader associated with a tag you had set, presumably the re will now have to be a pretty sophisticated algorithm or engine put in place to try and filter it out or at the very least an adblock style option to block any further content of that type associated with a tag.
In fact it would be great if you block anyone sendiong spam on a tag in a similar fashion to Peer Guardian so you would never get any metat data from that source again !
