Activity Feed Showing PHP Code


I'm seeing php code on my activity feeds. Here is a link to the site.

Underneath each update is

addthis_url = ”;
addthis_title = ”;
addthis_pub = ”;

It seems like this just cropped up but it's possible I just noticed it. The only new plugin I installed was buddypress group calender. Deactivating it doesn't seem to do anything.