When using the Open Source Software for commercial gain minus the tricks and preserving the community and openness aspects, there are two things to consider: that payment is collected proportionate to the advantage gained from the software; and that active user in the community can have the assurance that their license charges is compensated in relation to their code contributions. This means a user is allowed to have open access to the source code, allowed to redistribute it, and free rights to make changes to the code; being able to initiate some limited charges supported by certain restricted types of program execution, and agreeing to cash or in kind payments.