The non profit is something like "Save the Animals Group" = STAG
They are a subfolder (?) on their hosting company's main site (for cost reasons originally). So their URL is www.designkings.com/STAG
I am proposing www.SavetheAnimalsGroup.com but having thought I knew something about SEO, I am struggling to lock down the rationale. Can you help? I have a few points...
1) Credibility for the organization
2) SEO wise you'd be in control. External links point to your domain not theirs. If anything happened to designkings currently we'd be in a big hole
3) Build up your own "authority" not his
4) Does a subfolder attract authority to the main url more than the subfolder? Are you building up authority for the subfolder if you promote a subfolder? Bit blurry on this area.
Any input will be welcome.