I know about that. I try the links, and some details. Often I try to get a good paragraph (the site allows it)....
...but does this mean we can sue if someone we don't like quotes us?
No.
Copyright allows for Fair Use... which means you can quote copyrighted material for the purpose of commentary.
Where it becomes problematic is in the wholesale posting of entire works.
This is still a bit of a gray area, but what the law specifically addresses is TRADING on other people's intellectual property. Since Internet sites live and die on CONTENT.... Any unauthorized use of content can be seen as enriching your own site with another person's work.
However... most content on the internet is offered for free perusal... in this case, the infringement centers on TRAFFIC... as free content is meant to generate traffic which generates revenue for the site.
The best way to avoid any legal issues regarding quoting content from other sites is to:
A- NEVER copy the entire work.... Nor even the majority of it.
B- ALWAYS include your own PERSONAL commentary or critique of the quoted material to invoke fair use.
C- ALWAYS include a LINK to the site of origin. This essentially makes your quotation an Advertisement for traffic to the site you quoted from.
Few content authors will complain about you sending traffic to their site.
Follow these simple rules and you will be legally untouchable.
It doesn't mean you won't get requests to remove content.
It does mean you will be on legally safe ground.