Asset creator is creating fake accounts to raise average rating

This creator of 'Super Level Optimizer' is creating fake accounts to bump up his assets average rating.
Since there isn't a report button, my only way to raise awareness is by posting here.

Here's the asset:
https://www.assetstore.unity3d.com/en/#!/content/25370

Just some of his fake accounts. At the time of this writing, the reviews are all 5 stars, and the only reviews these 'users' posted are about this asset in particular and in some cases this creator's other, similar product.

https://www.assetstore.unity3d.com/en/#!/user/3774130
https://www.assetstore.unity3d.com/en/#!/user/3898578
https://www.assetstore.unity3d.com/en/#!/user/2532953
https://www.assetstore.unity3d.com/en/#!/user/3779368

It's worth noting that this guy already posted about his asset in this forum, and created several fake accounts to bump the topic and praise his crap until he was caught by the mods and the topic was locked.
He also speaks in broken english, just like all of his fake reviews.

Nothing against this guy, and I'm not selling anything on the asset store, much less a competitor.
The thought that someone would do this, and probably others as well disgusts me.
Not only it's unfair to other asset store sellers, it's luring people into buying crappy assets with fake ratings.
Maybe a report button is in order ?

edit: just spotted the "Report Abuse" button for individual reviews. Stupid me.
Still I think we should be able to report Assets to prevent similar situations, broken assets, not delivering promised features, etc. Just my two cents.