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At item 4 in the post at http://moz.com/blog/htaccess-file-snippets-for-seos the author recommends combining .htaccess redirects to avoid chaining redirects. I'd be obliged if someone could expand on: 1. What he means by chained redirects 2. How to combine the redirects per his recommendation Cheers.

Hi, Newbie alert! I need to set up 301 redirects for changed URLs on a database driven site that is to be redeveloped shortly. The current site uses canonical header tags. The new site will also use canonical tags. Should the 301 redirects map the canonical URL on the old site to the corresponding canonical for the new design . . . or should they map the non canonical database URLs old and new? Given that the purpose of canonicals is to indicate our preferred URL, then my guess is that's what I should use. However, how can I be sure that Google (for example) has indexed the canonical in every case? Thx in anticipation.