There are lots of threads with the same question/topic why don't you use the search button above to find them?
Since you are here for almost 2 years and you are already a Sr. member you should already know how to use search button.

Anyway, check these threads below to get an idea about your topic.

- https://bitcointalk.org/index.php?topic=1090560.0
- https://bitcointalk.org/index.php?topic=5206704.0
- https://bitcointalk.org/index.php?topic=5337252.0

He asked an honest Question why be a smartass? Simply DON'T reply if his Q triggers you. DICK