POF is very much alive... just dont go in there and do the same shit 90% of the people on there advertising are doing... and with $10.6 left, man... I dont know what to tell you. No matter what you run, its a waste of time, unless you target some highly inexpensive geos where you get a TON of impressions for 0.00001 CPM...
Thats what I'd do if I were you...look for the low cost unsold inventory.