Petition

Like the ad man say, interface is everything.  Making communication and interaction easier and people will use it more mindlessly.  Good interface already made life much easier, such as shopping, price comparison, trolling, etc. 

Online petition is harvesting harnessing the political power of the laziness and naivety of people.  There are people who will click on a petition without thinking through the cause, or they may think their little signature does not make a huge impact hence careless about the details of the cause.  They will coerce their friends to do the same, to click on a cause they don't fully understand.  If you have no time to study the issue or the cause, don't click. 

The petition is being abused by attention-seekers to broadcast their issues and thought online.  They are also abused by easily using false identity on their signatures.

Think before you click!