The Heart Bleed vulnerability affects many popular web services, including Yahoo mail/cloud, Gmail, Dropbox, and the Healthcare.gov site. It is best to change your passwords on these sites and refrain from using the same password on every account you have (especially financial sites).
AlphaLink has checked our services and we do not use the platform that is involved in this recent internet security threat.
The following blog from Malwarebytes explains the threat:
Mashable provides a list of web services that are possibly affected: