I tried commenthunt.com last month and payed 19.99$ for blog commenting service, but I didn’t get any confirmation email. I emailed them twice but still no answer. Later I learned through search that this site a scam.
I discovered the site on the user guide distributed by ArticleAssistant.com. They promote commenthunt as source of free dofollow blogs. Boooo.. Also beware of this software as my anti-virus detect a trojan dropper while installing the software. Thanks to Avira Antivir.