zuperman

Hello! I am building a site based on subdomains. Basically, I want to cover a wide variety of niches, subniches and invented niches. Each subdomain has one page, with plenty of text, some photos, all structured blog-style / by articles.
I understand Google treats each subdomain as a separate site, hence I my issues:

1) Is it safe to interlink the subdomains?
2) How useful is it for me to hardlink to another one of my sites if all the subdomains (arround 300) are on the same ip belonging to the same domain?
3) I want to sell hard-links from all subdomains at once to another webmaster's site. Will this help my potential customer, given the big number of subdomains and the unique ip? Consider they are also PR0, but there are alot of them.

Please give me your honest advice, thanks alot!

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Just a guy running a video chat studio