Google Hangouts Button
A client wanted to have site members be able to video chat with each other. Did you know you can add a button to your site that will initiate a Google Hangouts with invites going to a list of people from your site?
I used a fancy input field that would ajax look up member info from the database. I don't have that info on my site so I'll just use a multi select to demonstrate.
Here's what the video chat invite looks like with Member One and This Guy.
For each (fake) person selected below a new "Start a Hangout" button is created with an updated initial invite list.