Read Facts, Story, Synopsis - Writes Yours - Applaud Good Ones - Kick Bad Ones :)
Writing a Good Factoid is not as difficult as it sounds. Write around a narrow topic of interest - For example, Story, Factoid or even "Backgrond of Movie". Most important tip? - Make it read interesting. For Example, an interesting heading can be - "The Music Rocks - Kudos AR Rahman". And yes, do not forget to vote for your favourite writeups. Happy writing!