I’ve also noticed that they sometimes ignore their own stated contest paramters, displaying fewer than the promised number of honorable mentions, selecting entries that violate the stated contest rules, and disqualifying entries that do follow the rules. My entry to “The Setup”, for example, followed the rules to the letter and was more popular within the entry thread than the selected winner (link) yet was nowhere to be found, while another user’s entry that clearly violated the “clean desk” rule was selected for honorable mention.
I also could have sworn there was at least one contest that stipulated default aircraft/liveries only, where that rule was thrown out the window.