Did you even bother to read this post?
http://www.namepros.com/2764812-post3.html
In it I said that the extension of a domain name doesn't matter unless you're conducting a country-specific search. If you have any hard evidence from independent, verifiable, third parties that proves otherwise, please post it.
Given that subdomains are no longer treated as separate domains, and that .info domains are best used for informational and resource sites, I fail to see why you'd waste your money on one (and the associated hosting costs).
Any domain can be good for a blog - what matters is if the site is appropriate, or suitable for a blog.
And if done often enough can get you busted for creating an artificial link scheme, such as operating a link farm. It's a quick and easy way to get all those sites banned from the search engines.
Oh really? You know, if I had the time, I'd set up a .info domain, write some killer Web copy in an editorial fassion, and then use it to sell ice to eskimos and make a mint over night. As I've said before,
the TLD of a domain does not matter.