Distributing a profile
Signature profiles are an experimental feature and may be subject to changes!
The direct method
Since a signature profile is just a piece of text, you could manually send it to people, embed it on your website or post it on a forum. Just copy-and-paste and you have full control over where the signature profile is available.
The drawbacks of this method is that people need to go looking manually for your signature profile — which may be an advantage for some!
Currently, this is the only method of distributing signature profiles. We are working on additional methods. Feel free to join the community to help shape these new methods, or follow the progress.