[add-sub-mul-div]

It looks like OP only has an account here to self-promote, which also puts them in the same credibility tier as an advertiser.

[themgt]

There's actually two additional sockpuppet accounts (liquid64 / yakimbo90) in here self-promoting. Whole thing is throwing off a ton of red flags.

[aliasxneo]

You're right, this is a duplicate of: https://news.ycombinator.com/item?id=48910087.