In a previous post I was searching for the turn off comments for rebloged posts. With a little help from Ritu and some other wp friends who leaved comments in the post I found it.
So, reblog away and turn off comments if you want the original post to get the comments and the creds for the post. People can still press like button on reblog posts on your blog. So you get credit for finding a good post that you reblog and the writer of the post get the credit for writing it in the comments in original post if people click their way over to original post.
When I asked wp support about turn off comments for reblogged posts they answered me that it was not possible to do. Someone must have been tired that day in wp support🙂