Sites like Bit.ly offer a great service by allowing shortened links in emails, web pages and, of course, Twitter.
You just knew, though, that hackers would start using it to hide the URLs of mal-ware infected sites or for other dubious purposes.
Take solace, though, in the fact that you can see the final link location of a bit.ly shortened link without actually running the risk of visiting the site.
When you get a bit.ly link - such as bit.ly/xbMKWR - simply copy and paste the link into your browser window and, before you hit <Enter>, add a plus sign to the end so it looks like bit.ly/xbMKWR+. Now hit enter and you will go to the Bit.ly site instead and see the full link address. At this point, you can decide for yourself if you want to visit the site.