I'm surprised that most of members here are attacking WPN , there is no such site that will give you a totally free 100$
ACR is doing a great job by giving away some of their rake , this is a great opportunity for real players who play in ACR
I had a great value from the PLO event , and this new bonus is great if you play cash games or spins
so yes even if you are raking money , this promotion still a great bonus
It is not totally free $100. Totally free means I log in and grab my $100 for free. And that is different story, it is promotion meant to bring the House more money than they are investing.
To receive this you have to play and wager before. It is a bonus, but it is not 'totally free'.