Free mining! Earn some bitcoin by Cryptotab!

Hi, my friend.
Today I show you a free BTC miner. It is Cryptotab. However, You have to use google chome.
I'm so sad.... Why you do not start ??
You can earn more btc by using referral system!!!!
Now, I have 9 friend !!
Please join us!!

If you use Chrome, follow this link https://getcryptotab.com/609543

And now They are starting event!!

14.04 : 0.00001192
15.04 : 0.00001237
17.04 : 0.00001782
20.04 : 0.00002158
27.04 : 0.00004103
01.05 : 0.00005204
02.05 : 0.00005503
07.05 : 0.00006655
09.05 : 0.00007436
10.05 : 0.00008594
13.05 : 0.00009582
14.05 : 0.00009872
17.05 : 0.00010975

I will check everyday Cryptotab!!

They say :
Google Chrome must be opened to mine Bitcoin. However, you can close this extension window and you will continue to be mining. To save your BTC and list of referrers you need to sign in.