Credo (as in Working Assets) gives a percentage of its charges to various organizations. Now, there is a way for you to vote for which organization will get an infusion of cash. One of the choices is the NCSE.
According to Robert Luhn of the NCSE:
… NCSE is on the 2010 ballot. If your readers support the teaching of evolution in the public schools…well [they can go to the] CREDO ballot and [the] to the “Economic and Social Justice” section, where the listing for “National Center for Science Education” resides.
On the Credo site, it says:
If you are a current long distance, mobile or credit card member, or have sent a CREDO Action alert, please select a service below and sign in. Then vote for the organization(s) you would like to support.