Beware of smooth-talking con-men. Some were ex-criminals i.e caught and jailed for cheating. Surprised??!
It is extremely important to do your homework properly. Some will say they have changed/repented and tell you sob-stories, please don't be manipulated emotionally, use your intelligence to think rationally. Just say "Thank You" and QUICKLY WALK AWAY.
If you wish to part with your $, there are many other charities that are more worthy of your monetary contribution, don't be conned.