SE and sub domains

[airguy]

I have a few domain names and I want to run sub domains branded by what they will be offering.

ie, collectibles.mydomain.com
or
videos.mydomain.com

Before I get started and dump a bunch of time in them I have a question, I hope someone can answer, how will Search Engines handle the sub domains?

Would it be better to register collectibles-mydomain.com or collectiablesmydomain.com and just run them as separate domains?

thanks

[cbp]

Probably the same way that Google handles it own subdomains:
http://news.google.com/
http://images.google.com/
http://froogle.google.com/
http://answers.google.com/answers/
etc

ie - should not be a problem, generally.

CBP

[Mel]

Subdomains are considered as a seperate standalone domains, not a part of your site.