The Heartbleed bug is an encryption flaw in OpenSSL that 66% of the secure websites use on the Internet. Read the article from Mashable to see if you are afftected. Chances are you have been affected.
Website owners are working diligently to patch and upgrade their sites. What you need to do is change your password for any site that uses the https: protocol. This will include any site you deal with that has to do with money. Bank sites, credit card sites, and online shopping are the most prevalent.
ES- Owner/operator of Computer Troubleshooters MB