LPT: Never donate money to a charity that the cashier asks for at the grocery store

You've read that right. Never donate money to a charity the cashier asks you at the grocery store because most of the money goes to administration fees. I put a link down below on how these famous charities money are actually distributed. It should be a red flag that a grocery store is really pushy about a charity anyway.
http://thetruthwins.com/archives/many-of-the-largest-charities-in-america-are-giant-money-making-scams
*Isn't it also suspicious that Komen's Breast Cancer charity spends millions of dollars advertising instead of the money actually going towards the research?
*EDIT 1: Hey guys, if you want to read more about how a lot of charities have bad intentions, check this list out http://listverse.com/2013/10/07/10-horrible-facts-about-charities/