I agree with most of the reviews here and think these guys did a great job.
They have a pretty big network of followers and email subscribers and this helped to boost my crowdfunding project.
Signed up in the middle of my campaign after struggling a in the beginning after an initial good start but had a bit of a rough patch.
I would suggest adding them to your overall marketing campaign as a great boost and they seem to do best with tech project on Kickstarter.
Thanks,
Joe H.