One of the concerns that’s brought to me on a semi-regular basis is whether or not 301 redirects diminish the quantity of link juice gone by a link. That’s highly appropriate in today’s world, specifically when it pertains to URL shorteners such as j.mp that utilize the 301 tag as their mode of operating. While I’ve had plenty of info to evaluate, digest, and after that summarize for people in the past, the guidelines are consistently altering and more clear data is being provided. More particularly, simply a few days after my last post on the topic of canonical URL tags and 301 redirects, Matt Cutts is offering an update on the official stance.What Cutts is
making clear in this latest video is that yes, you do lose some link juice from 301 tags, but it’s such a percentage that it’s basically negligible. The only factor Google does not count 100% of your link juice is that internal links on a website also show some diminished returns on link juice, and there’s a worry that web designers would begin video gaming their page architecture with using 301s if Google let through all the link juice. However truly, Cutts is saying it shouldn’t matter which 301s are usually the very best alternative (and certainly much better than rel=canonical rags).
Canonical tags, states Cutts, need to be a backup in case you do not have server access to make the appropriate change to your htaccess file. Google will generally take note of canonical tags, but may overlook them if they seem destructive, if they’re placed in the incorrect area of your code, or if they appear to be pointing to a 404. However, they’re no much better than 301s at enhancing link juice return for pages.
[through Matt Cutts]