I am always on the lookout for new Arduino projects to try and this one from Geeky Gadgets caught my eye. The Adafruit anemometer was a bit pricy at $44 and I wonder if I might be able to find a cheaper alternative somewhere. Of course, as with all things, you get what you pay for, so other, cheaper units might not be as robust, especially in this situation where they need to be exposed to the elements.
I could foresee using this with my Arduino Yun to log and post the information to the web instead, or in addition to, having a local screen, but I am biased in the direction of making all my projects Internet accessible.
Complete code and instructions are available in the Geeky Gadgets Blog post - Arduino Wind Speed Meter Anemometer Project