One of the coolest ideas at Web 2.1, Tagyu is a free service that automatically suggest tags for your content based on a URL or chunk of text.
It works by comparing your text to text other folks have written and how they’ve tagged it – a sort of “reverse-folksonomy” as Jeff Jarvis puts it and was founded by Adam Kalsey, formerly of Pheedo.
Check out the official Tagyu Blog here.
