I've been some time developing a solution for most of us. It's a website called Parkuik that will use a wiki-like environment to make us easier to find parkings (some of you may have had this problem on your city :-P) with the help of all of us.

I can just develop it when I have some time on weekends, but it is starting to have some users and I hope sooner than later It'll be one of the reference websites for this :)

You can find it here: http://www.parkuik.com

Hope you can visit it and tell me whatever you think that can be done to improve it :)