Hacker News Reader

Really?, wow... I had no idea about that. I bought some followers for a client once, but "1000's of links" for $20 sounds surreal (at least for me!)

You would be really shocked at what $20 can get you in some communities. You might have inspired me to do some writing on the subject.

it's mostly automated comment spam, forum spam and the like.

75% of those links won't even be valid, so you really do get what you pay for on Fiverrrrrrrrr.