I agree with Dianavan that psudonyms are handy for the reasons she has given.
& I agree that the internet is a wonderful way to spread information and to document and save cultural info.
Re posting about music/folkculture, you could document your sources separately and keep them archived (eg donate copies of them to libraries or universities) while publishing the results in an edited or transformed (eg using pseudonyms, net names) version. That way you have your sources available to verify the work you do. It seems you have an encyclopaedic amount of work collected - I'll bet some educational publishers would be very interested in it.