There are but I think the question should have been, what made a post not to be quality enough and I will say they are definitely plagiarism, if you are making a content that is not yours even though it's quality, it will be taken as offensive post because they are not yours and you may be tagged for doing such. It's better to give credit for such post or any information that didn't come directly from your head, you can simply used quote and you are good to go.

Another quick note is that you should learn about Bitcoin, altcoins and other things related to cryptocurrency, if you don't learn this things, I'm afraid you will only be spamming and posting unrelated things, probably spamming every board with unrelated things and in the end, you will get tagged for doing so. Lastly, read things before you reply, otherwise you will only be making off replies which will probably get deleted or in off topic board, similar to when you post off thread/topic.