Recently Windows Phone was snubbed by Intuit when they pulled their Go Payment app for their terminal from the store. When you do a search for Credit Card terminals only 3 apps pop up and none of which are developed by Square. Unless you are living under a rock Square is a massively popular credit card terminal that docks in your 3.5 mm headphone jack to accept credit cards. Only thing is: availability is limited to iOS, and Android.
So Why bring Square?
Because thousands of people use Square and if a small business wants to use it for his business he would be limited to getting an Android or iOS device.
How will a petition help?
It has the ability to take everyone's voices and put them into 1 strong voice to send a message to Square. The worst that can happen is Square ignores it right?
Why should I sign the petition if I don't use Square?
Because Square is a high quality app that could bring other developers to Windows 8/ Phone 8 because it shows that Windows 8/ Phone 8 is worth developing for.