I envision having part of the logo be a smily face of some sort. I'm not a great logo designer though, this is where you come in :-)
I'm not exactly sure which casing will look the best. These all may work:
But I am leaning most towards:
With this in second place:
Screen real estate is at a premium in our application, so it would be nice if the logo wasn't terribly tall in height.
Our goal with the logo is to inspire trust in our users, make them feel happy, put them in the mood to share intriguing photos and videos with their friends, and make them excited to come visit the site every day.