What are some good Facebook groups to join where one can actually DO something after joining?

not like '6 degrees of separation' or 'break the guiness world record' or 'i will get married if this group reaches 100 000 members' ... something useful

What are some good Facebook groups to join where one can actually DO something after joining?
Free Rice is a good one.





Feed a child with just one click





Four guys, one destination, one mission: Suicide prevention





Career center: meet your future





You can also add the causes application, and support many causes.





Hope I helped.
Reply:the group "Free Rice" is a good group