Do subdomains increase the main domain's popularity?

[Anonymous]

Do subdomains increase the main domain's popularity? Will the subdomain's traffic increase the positioning in the search engines results of the main domain?

[Ryan]

To some extent I would say yes, website hostings get a boost in most search engine algorithms when you use your important keywords in your domain name. But if you're targeting ten or twelve keywords, they're hard to put into a single name. In this case Subdomains give you more opportunity to include keywords in your domain.