Just received report for review copy - 5 comment links for this review, and here's how i see it:
I provided URL, keywords, niche related (adult niche / sex toys).
I can't even speak about TAT because they provided the report in less than 5 min.
Links were made in sex topics / sex toys related blogs with DA PA between 9 - 40, all Do-Follow and actually they were pretty good for a spamming service.
About the website spam from 5 websites just 1 was with 4/17, the rest 0 so it seems to be safe.
Links are clearly hand made, on topic.
Being niche related there are less chances getting deleted, so i think they will be live long enough.
(Update: after 3 days 1 link got deleted)
How much this helps in ranking? Frankly i don't know, they can be more efficient/helpful for low / easy to rank keywords.
What i would recommend?
Spending more time creating more a creative, interesting comments so IF there is any traffic from those blogs, ppl would actually click / drive traffic to your website.
I find this service a good diversity way of having links for ranking keywords.
