Quite a few older folks on limited incomes did cash their "windfall checks" -- and lost the mineral (and surface) rights their their property.
I threw away the first few drafts. Then, I took the latest one to the range and carefully wrote " NO! " on it in bullet holes -- and mailed it back. I never heard from that 'oil shark' company again... '-}
http://www.freerepublic.com/focus/f-news/1162685/posts?page=54#54
Now that is a firm response!