Just had an idea for a bitcoin tipping app.  It is super simple and super scalable.  It would be just ios and droid apps for the moment but could work with any other app that's out there.

It would be called BitTip or BitRain or something.  It has an fund address that you load up with some spare Btc.  You can either directly enter the website to tip or use it as a "share" action.  So you are browsing a blog/comic/news site on your phone and want to tip the writer.  You go to share the page and choose BitTip as the app to use.  You decide the size of tip and hit Send.  The app works its magic and sends the money from your tipping fund directly to the websites address.  There is also probably a screen with the status of all your tip transactions plus funds in and out. 

I also envisage the setting of the tip size either from a menu or by making that "make it rain" gesture on your phone.  The more swipes, the bigger the amount. 

The special sauce is how the app talks to the website to get its Btc address.  It is super easy for the site owners.  You could probably add in individual authors as well.  All completely decentralized, expandable and instant. 

Who or what would you want to tip? How much?  A couple of cents to a couple of dollars?  1% commission ok?  Are there javascript libraries for sending Btc?