It is not available to me, is it limited to certain countries? Erm, never mind, I think I found it: https://www.mturk.com/mturk/searchbar?selectedSearchType=hitgroups&requesterId=A1Q7O19APQMMMG
I have been doing these for several months now and I did another 5 today. I am still trying to figure out what the requester's rationale is for posting these.