Canonical tags
Do they really consolidate inbound links? How can this be measured?

Link anchor text
Do links pass relevance from the second occurrence of a link to the same target URL?
n.b. My first test results on this are almost ready to publish!

Page title
Despite the aesthetic value of limiting a page title to 70-75 characters for the SERPs or browser, at how many characters past this point will a keyword still pass relevance? 76? 150?

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