jimbeetle - 4:05 pm on Jul 11, 2012 (gmt 0)

Would you include poor quality sites e.g. typically blogs that no-one reads, or off topic blogs linking, per MC's interview with Eric Enge

Sure, of course. Blogs that nobody reads and directories that nobody uses send no traffic. A link that doesn't send traffic is poor quality (?and unnatural?). A backlink profile with many such links is poor and thus gets your site dinged.

Logical? Maybe.