My guess would be NO. Now don't quote me on that for sure, but after visiting their site, to me it smells of a link network like GhostRank (that Matt Cutts and cronies just demolished) and that (a) YES, it would absolutely improve your rankings for a bit but (b) that once it's found it will surely get you an email from Google Webmaster Tools stating that they have found some shady links in your profile. Granted the (b) scenario isn't as bad as it sounds as they usually just notify you they won't be counting them anymore, but that does not in any way look above board.
When it comes to shady link aquisition which I assume this could be classified under, I think it's always better not to take part. At best you'll get a small boost for a while (maybe even a big one), but it will be short lived because at some point those links will be devalued and you run the risk of getting your site hurt.
And it's kind of like pi$$ing into the wind to some extent.