[how do I release my land?]

I am trying to downgrade from premium to basic and it keeps telling me that I can't unless I "drop" my land.  And I have no idea how, or what its talking about.  Can someone give me a hand? Thanks!

[sl groups question]

So, I have been out of sl for almost 2 years. I have several groups I am part of, and several where I am the only person left so I can't leave....how do I leave these groups??