Sub domains are always an interesting part of SEO and we often get questions about their status and when to use and when not too, use of keywords in the domain.

Using say this bedwetting example of a subdomain of a well known bed wetting product used in Australia. While this subdomain will appear if searched in the toolbar it does not appear when searched in the main results, in fact it appears non existent, just the main site is in the results. It is however in the index.

Any other experiences with subdomains, rankings and use of keywords in the domain.