Is Facebook is using the LinkedIn API to make friend suggestions?  I've had several "recommended" friends on Facebook that:

- share no mutual Facebook friends with me.
- I haven't talked to since 2004/2005.
- I'm connected to "professionally" on LinkedIn.

I can't come up with any logic for the recommendations outside of FB using my network and/or email address to triangulate my LI identity and then comparing the connections between the two services to make suggestions.

If this is happening - is it smart or creepy?