Do you have multiple domain names? Is it better to have the same content on different domains or redirect to one domain? Point all your various domains name to the one domain.

For example; if you have - mydomain, mydomains, myotherdomains, somanydomains but really only publish to one site or blog put a 301 permanent redirect to mydomain.

this way when someone types into google my domains it's more likely they'll get to mydomain.com.

Why do so many people use google as an address bar these days?

This way you are funnelling more traffic to your core site.