Just curious if anyone knows any way of styling the link in a web page, so that say people link to a website I own, Facebook will show some random image on my website next to the link - instead of one that I have defined it to show.

Any idea on how to go about styling the way Facebook embeds the content in a link when you post it on there?

Hopefully people understand what I mean, if not I'll add a picture up!
Thanks for any help given guys, much appreciated.