I've just signed up for Snap! - a service which allows reader to see previews of websites that i link to before actually visiting it. Using it is pretty simple. Just hover over any link you see in this blog for a second and a preview should pop-up.
If you like this and want something similar for your blog/website, visit snap.com. For a detailed introduction, visit new users guide to snap.
And for those who dont like it and would prefer not to see those previews, there's a opt-out option here.