Can someone tell me why this post got flagged?

Question

Hi everyone.A friend's post was "flagged".https://news.ycombinator.com/item?id=29471922I am not sure what that means but it is not a good thing, right?Why did this happen?I remember that GitHub links are allowed in a ShowHN post.

Tomte · Accepted Answer

Obviously because you sent all your friends (Twitter followers, whatever) here.See https://news.ycombinator.com/newsguidelines.html "Don't solicit upvotes, comments, or submissions."

detaro · Answer

Because having dozens of accounts sign up to make unsubstantial comments and upvote is spam, and not welcome here.

Can someone tell me why this post got flagged?

Hi everyone.
A friend's post was "flagged".
https://news.ycombinator.com/item?id=29471922
I am not sure what that means but it is not a good thing, right?
Why did this happen?
I remember that GitHub links are allowed in a ShowHN post.

Obviously because you sent all your friends (Twitter followers, whatever) here.
See https://news.ycombinator.com/newsguidelines.html "Don't solicit upvotes, comments, or submissions."

Because having dozens of accounts sign up to make unsubstantial comments and upvote is spam, and not welcome here.