You are mistaken on this one, there is a @#$! storm going based on the DMCA and newspaper articles being linked to (yes just a link to the newspapers website) and most of the close to 100 websites hit can not afford to fight.
These recommendations are specific to Righthaven ... and good practice in general.
If you run a single publisher BLOG website as opposed to a user submitted content site like a forum, the best thing you can do to ensure "fair use" on your postings is:
1. limit the amount of the article copy / pasted BY YOU on your website to the relevant portions of the article you wish to discuss and NO MORE THAN 50% of the source material
2. Include your own original commentary / criticism WITH THE POST of the original article on your site. THIS IS VERY IMPORTANT FOR BLOGS ESPECIALLY
3. Provide a link back to the source article
Further, if you own a forum or anything that has user submitted content that might be copyright someone else you need to be very careful about not asserting ownership rights over that content..
You can't go around claiming you hold a copyright on someone else's copyrighted work that was posted on your site for education / criticism... and you should not be issuing DMCA notices based on theft of copyright...
So make sure your copyright statements reflect the fact that you assert no copyright ownership rights over user submitted content, only your web design, scripts, etc....
My guess is this will all blow over in a few months but until then we'll have to tread carefully.