Snap previews—like 'em or loath em?

As an experiment, I've turned on Snap previews for the links in these posts and in the sidebar too. Roll over a link and you'll see what I mean. Usually, you will see a miniature image of the linked-to page, but for Wikipedia pages, Amazon product pages and various other kinds of sites, you will see specially-formatted summaries of the page's content.

Hopefully this provides a useful timesaving functionality to my readers, but it could, conversely, becoming a bit annoying to have those boxes pop up all the time? Let me know if you have strong feelings one way or the other—I'm happy to turn Snap back off if you all hate it!