Hey Fire, sorry, but I don't think you can discourage Megaupload - I know that it's bitchy towards Singaporean users but many other people, especially those with premium, including me, prefer it than Hotfile or Fileserve for downloading (maybe next to Mediafire for non-premium). So I had to remove that part from your guideline thread.
Also, Rapidshare is not highly discouraged - it's banned. =D