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Does Facebook Open Graph tags have any benefit to SEO? e.g.

Playing with the trial version of this and it works really well. My boss is notoriously tight though -- is there a cheaper or free alternative?

I've tried a few proxy tools to try to see how my site looks from other global locations, but haven't found one that works very well yet -- or a list of reliable proxies around the world.

I need to do this to test various geo-targetted ads and other optimizations.

Can anyone make a recommendation? Thanks!

When I perform a "site:" search on my domains (without specifying a keyword) the top ranked results seem to be a mixture of sensible top-level index pages plus some very random articles.

Is there any significance to what Google ranks highly in a site: search? There is some really unrepresentative content returned on page 1, including articles that get virtually no traffic. Is this seriously what Google considers our best or most typical content?