New clone species

Usually, the idea, positioning, functionality, design of a resource, but not its content, are copied. That would be stupid - why let no one know the second double of Habr. Content double is really not needed, but a different sorting of content may be interesting. For example, going to a double-habr, a person would see the main page made up of other materials taken from the same Habr number 1. That is, We are talking only about a different rating system. This post is not associated with any dissatisfaction with the Habr rating system, the latter is taken purely as a convenient illustration. Nevertheless, a part of those who are dissatisfied with something on Habré 1 would leave for a double-Habr and write the original content there (in addition to the duplicated one). Thus, the clone does not need to strain hard in filling with content and users, but of course you need to strain in creating the original rating system. Here is an idea. I do not know what is in this case with the legal aspect. It is possible to allow to give a link to each borrowed topic that it is taken from Habr - is it not considered as stealing? You can not be limited to Habrom, but create a rating aggregator of various content resources.