I have a photography business and my hosting packages contain the .com, .net, and .org version of the domain. I am currently working on a new design/brand for 2013...

While I understand how to create subdomains, etc. I am looking to see if anyone has any web sites and/or suggestions on how to go about using each domain?

I am using the following subdomains already on the dot-com: blog, mail, clients

I will be using the .com as the main site, but am looking into having such things as a pro-bono site (maybe the .org) and hosting personal work (think Flickr-style gallery) as well.

I am looking to grow my business over the next few years, so I'm hoping there is something out there that can help me setup each domain to what would be best for them.

Thanks for your help.