Here's the blurb. <start> A totally new and smart way to check SEO stats while you surf: The SEO Links extension gives you tooltips specially enhanced for SEOs. When enabled, hovering any link in Firefox will show you Yahoo, MSN, and Google link popularity and ranking data for the URL and anchor text pair. For times you just want regular surfing and tooltips, the extension can be quickly toggled on and off in a single click <end>
I'm using it. It's kind of neat but also kind of annoying since most of the links I mouse over are not links which I want to know the link pop of (i.e. reply to post...). Easy to turn on and off though.