Quote:
Originally Posted by WiredGuy
The downside about using subdomains is often google will see these as seperate sites. Which means you need to establish a lot more backlinks for each subdomain to be ranked anywhere descent. I'd rather keep those links to a single domain than spread them to tons of subdomains.
WG
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This isn't necessarily true. In regard to backlinks, there's almost no evidence that Google takes into account domain-level markers. For content post-panda this is certainly the case (at least in regard to the penalty), but backlinks still aren't a factor domain-wide.
As long as your subdomains are interlinked in the same manner as a normal site, the pagerank/trust/linkjuice/whatever should pass between them as fluidly as before.
If you want an example of this, check out Hubpages. To combat the Panda update, they began issuing authors their own subdomains. This would appear counter intuitive because then each author would be missing out on all the link juice from the Hubpages domain, which would ultimately result in lower rankings (or no increase at all after the penalty was removed.) Instead, what happened was that most of the pages were restored to their pre-Panda rank.