There will come a moment, during Windows 8 / WinRT development, that you will run into this error:
Cannot write more bytes to the buffer than the configured maximum buffer size 65536
You will google it and end up here.
There's an easy fix for this error message, just increase the buffer size:
HttpClient client = new HttpClient();
client.MaxResponseContentBufferSize = 9999999; (or any value you'd like)