Is it the bitcoin foundation?
No. The Bitcoin Foundation has nothing to do with the forum.
Both bitcoin.org and bitcointalk.org are owned by me and theymos, though I'm more active on the bitcoin.org project, and theymos is more active here.
Satoshi and Sirius used to be involved, but they're not active anymore.
This is another fact that I didn't know about the forum.
I checked the status of the bitcointalk domain and seems that the domain is renewed for additional 7 years last week, so this was done from you right?