Does it make sense to check every url for rev="canonical"?
If it doesn't have such a canonical URL (which most of the time it won't) then there's going to be a small but possibly annoying lag as rather than one HTTP request it must now perform two.
Does it make sense to always prefer the canonical URL?
Does it make sense to check every url for rev="canonical"?
If it doesn't have such a canonical URL (which most of the time it won't) then there's going to be a small but possibly annoying lag as rather than one HTTP request it must now perform two.
Does it make sense to always prefer the canonical URL?
The canonical URLs can be longer than other URL shorteners - http:// www.flickr. com/photos/ dsas/3805084857 / has a canonical url of http:// flic.kr/ p/6Nf4ak (23 chars) and an is.gd URL of http:// is.gd/2lBDq (18 chars)