Its not mine but i got such 0.001 BTC messages from network of few domains.
I sent there some cash and got it back.

http://i.imgur.com/Ti8RqVr.png

itso en bit network with many urls and servers yet so far they paid me back.
use at ur own risk brotherss and sisters!

i got free cash from them so also sent them some

http://doublebtc.getenjoyment.net
and many more, all same network of multipliers. works since at least 14 days.