Professional service providers anywhere can join. They need to be online. They need certain competencies and integrity. There are quite a few marketing methods that we could try. People can join for free or for low, reasonable monthly or yearly fees.
Members can suggest internal projects.
There should be some limitations so that things do not become overwhelming. There are agreements and commitments. Project information that is reviewed by others should be done so under some type of confidentiality agreement. There can be customers or clients for what we develop or set up. People need to have some level of involvement with a project in order to benefit financially if and when there is success.