Saying it all in under 100 characters

TIPS:

• Include your “meme”: a memorable phrase that rolls off the tongue and packs a lot of information.
  Examples of memes: Blood Diamonds, Tibet's cry for help, people over profits
• Be specific: You may want to name the target, identify what piece of legislation the petition addresses, include the city or country you're addressing.
• Use active verbs: Make the act something everyone will want to join in on.

EXAMPLES:

• South Africa: Stop the Secrecy Law!
  It's clear about the location and specific legislation targeted, while being compelling to people familiar with neither.
• Headmaster Miller: Stop rejecting the Gay Student Union
  Uses active words and frames the petition's ask as a decision the target can make.
• Fire Rupert Murdoch
  Straightforward -- uses a phrase that can be used throughout the campaign, which explains the demand in fresh and memorable language.
• Hilton CEO Nassetta: end rape in your hotels
  Addresses the target directly, while making a shocking and controversial association.
• Answer Tibet's cry for help, stop China's crackdown
  This is both explicit and enigmatic -- you get the idea that Tibetans need help defending against a Chinese crackdown, but you don't know exactly what the cry for help is or how we can "answer" it.
• Tell the EU Environment Minister: "Trick or Trees" in our forest policy?
  A little humour can go a long way.