What does this facebook symbol mean?! HELP!?

[Tom]

After unlocking my ipod after I got home from school I saw a notification that said: 'Do you know T***** G****** (Not going to say name due to privacy reasons)'. This was strange to me as in the 5 years I have had facebook I have never once come across this symbol and I have also had the same ipod and not changed any settings that would affect this either.

Next to the notifications text there was a symbol that looked a little like the atomic symbol, however I have uploaded the symbol to puush (The image wasn't too clear so I uploaded a few different versions), the link is below. Please view this symbol, which I have cropped out of the notification and tell me what it is/ what it means.

I will appreciate any help given, and thank you for taking the time to read this!

Puush links:

http://puu.sh/7yWZH
http://puu.sh/7yWYi
http://puu.sh/7yWlM
http://puu.sh/7yWh8
I appreciate the help guys, but I looked at my app list and 'wannawin' isn't on the list? I don't have any app with a name like that or even similar to that, please explain what I'm missing here! Cheers.