Imgur.API-net40 is a .NET 4.0 forked version of Damien Dennehy's Imgur.API.
Imgur.API is a .NET implementation of Imgur's API.
It supports Imgur's free and Mashape's commercial API endpoints.
Lots of things I can improve on this at the moment, this was a quick fork then back port so I could use it on my personal website where I am limited to using .NET 4.0.