EasyWWW is the easiest way to get info from any web and put it in your project in realtime
Features:
Supports HTTP and HTTPS
Get the entire source code from an URL
Find specific text even if it changes
Get textures and sprites
Get Google Spreadsheet as 2D Array
Fully documented
Added in 1.1:
Get file size from an URL
Get Google Spreadsheet Cell as Vector2, Vector3, Color, etc...