Copyright concern: informing others while using syndication for private usage

A blogger who wants to post large portions of external articles for his/her own usage, but at the same time wants to tip others about these articles through syndication, categorisation, etc., is facing a dilemma: the copyright will be violated if including too much of the article/reference, but that material is still legal (and important) for personal usage/personal efficiency.

A solution to this could be providing an option to set up syndication of only the teasers and - importantly - where the provided links go straight to the original source, not to the blog they are syndicated from.

(this ties in with the needs to offer syndication from sites that are closed to the public, too)