Someone just upvoted my post without leaving a comment, even though he could have earned 25 cents (Wow! :) )

So, I clicked on his username and looked at his channel.

Immediately, I found a "Hidden due to low ratings" post - naturally I had to click on it. Who wouldn't?

I really can't see why this was flagged.
Can anybody explain? Are there any clear guidelines?

Here's the link:
https://steemit.com/genesis/@gbonikz/10-terahash-upgrade-with-genesis

![](https://steemitimages.com/DQmY1XN2okWxGAbZNCQ54n1gnkn91t8NyHSZbFueG8neQjc/image.png)
(pixabay.com)

---
 
Thanks for looking at my post and..

![](https://steemitimages.com/DQmTvw4CcGnxEBtR1xnT32ocdh3YhgB6fRYjPYYZsTei78f/image.png)
(pixabay.com)

... be happy!
______________________________
The Smallprint (I always try to upvote any reasonable comments (i.e. those with more than a few words) with between 5% and 20% of voting power - this presently equates to about 2 cents to 8 cents depending on my voting strength. Please be patient, it can sometimes take several days before I do my upvotes. If there aren’t enough comments, I will simply upvote myself.)
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