Besides all of the usual Valentines day logo fun from some of the major sites out there, Paul Reinheimer also points out a special little something on the Funcaday.com website:

Want a custom one to share with someone you care about. Fill out the form here. It's a subtle effect though, they'll need to read it. Valid characters for names are just alphabetics and the underscore, sorry.

The custom output is a great little addition to the site - put in person one's name and person two's name and it updates the image to show the new parameters. Ah, geek love...