Ok I have tried his Service. Here's my review for his Service :

I have selected the keywords 'offshore, vps, hosting' for commenting. I gave this information to 'TheReaper' and asked to carryon his service. He asked to wait for some hours to give a detailed report about the Blog Commenting. After some hours I got his report. I checked many of the URLs in the list where he had commented using my keywords. Some Comments were deleted by the Blog Webmaster while some were still there. Mostly all the blogs were "DoFollow" Blogs. Only some where "noFollow" Plugin was installed on their site, were "noFollow" Linkbacks which equals to Zero profit. He commented on many sites. The sites include some high traffic sites too. So I'm now just waiting for google to calculate my new Linkbacks. Hope everything goes well.
His service is great. Its like out of 100 Comments, 75 are stayed while 25 are deleted by their webmasters. So its worth tryingout.

Thankyou.

Kind Regards,
Plutost