Quick update - added a Flickr account, working on a Naymz account now. Naymz is a very well ranked site that is definitely a centralized repository of all sites you want associated with you.

Also, just a quick n00b trick that came up today. If you want to do a keyword search but want to exclude the keyword/site that you're trying to research, use a site restricted query. Example:

I wanted to know about Naymz.com and what people were saying about it, but they own the top10 results:
GoogleSearch: Naymz OR Naymz.com -site:naymz.com

Removes results from sites with the root URL of "Naymz.com". Of course they were clever, and have other site listings that still ranked ;)

Remove the "-" part, and you can restrict all results to come only from the site you specify, which is very helpful if you're trying to locate specific information such as contact info, or any reference on the site to a particular topic.