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Between those two I would choose the second, the first one just seems like you are trying too hard to stuff those keywords in the URL.

Danny Dover also mentioned in his new book (Search Engine Optimization Secrets) that iframes do not get crawled. Just another source backing up Daniels answer.

Hmmm thats weird, it worked on my site. Anyways I just checked out your site and it looks like you figured it out, what ended up working for you?

Try this, I think this it what you are trying to do.

Redirect 301 /shop/ http://www.hiphound.com/

However, if you want to change where it goes, and add an extension, like the # you would do this

Redirect 301 /shop/ http://www.hiphound.com/#

Yes it is a good idea to redirect the non-www to the www as long as the www has more links, otherwise I would suggest the opposite (www to the non-www). You just have to make a file named ".htaccess" and placing this in the document:

RewriteEngine On

RewriteCond %{HTTP_HOST} ^example.com/ [NC]

RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]

Then just upload it to the server.

Aside from adding the +1 button to your sites I doubt it will be that big. Most of Google's attempts at adding social features don't ever take off like they do for Facebook or other sites. I imagine the effect will be similar to that of how Facebook likes affect search engine results. It will help but not too important of a factor.