Ive tried once something similar but with higher bonus at registration. It was 50 usd. I actually went to 80 and then lost everything. Invested 50 more and lost those too. Enaugh 
Bad experience 
you mean no deposit bonus dude? if you search in forex broker actually there are many no deposit bonus, you just register new account and bonus will deposited to your account. before you have skill in trading better to use this free dollar from broker. Bad experience