Sandbox

Maybe nobody cares about it but.... plural of "Forum" is "Fora".
It's a Latin term, not English... 

Forums is acceptable as the official language for these forums is English, not Latin.

http://dictionary.reference.com/search?q=forums

http://www.webster.com/cgi-bin/dictiona ... &va=forums

http://www.thefreedictionary.com/dict.asp?Word=forums

..no doubt about the answer...