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Yeah, of course. The rules are mentioned here : Collaborative curation with DCooperation !. It's in the beginning of this post. ( the contest post )

Okay, thank you

Adding the link of the post the content was taken from will help curators to find the whole text to read and support. As well it's as a source, so no one will consider that plagiarism or something. A part of the content quoted, the author mentioned and the clickcable link to the post the content was take from added to the post of promoters.

It could really change the curation game. More good content will be found. More authors supported and new relations built.

But if you're taking a quote from someone's post and promoting it, does it means that post in general will be about promoting that person's post?

I read this maybe 5 times to understand @josediccus. lol

The post shouldn't be only about the promoted content, but about the same topic you write about.

It's ok as well to talk only about the post and to promote it. I think boths ways are good to go !