Andreas Kolbe writes: As Wikipedia is about to turn 15 years old, relations between the volunteer community and the Wikimedia Foundation board have reached a new nadir. First, Dr James Heilman, an immensely popular volunteer noted for his energetic efforts to make Wikipedia's medical articles more trustworthy, was expelled from the board, causing wide-spread protests. Then it transpired that Wikimedia is working on a secretive "Knowledge Engine" project funded by a restricted grant from the Knight Foundation, leading to calls for more transparency about the project. Lastly, a few days ago the board announced the appointment of Arnnon Geshuri, former Senior Director of HR and Staffing at Google, to the Wikimedia board, provoking a further loss of confidence. The volunteers are pointing to Geshuri's past involvement in anticompetitive hiring agreements at Google, which led to a class-action lawsuit resulting in a $415 million settlement. They want Geshuri gone.