Hi, I'm prolly going to make an app for mobile that uses web services. I have my scope of interest what I want to do yet I would like to get some overview of it.
Is there are some list of available web services that I am allow to use (with example in C# would be best). I saw an app which uses it to recognize the sound (name of song etc.) of given wav file.
Any hints for me?
(smile if you like JSON :) )
Short answer: you can use any web service, from most any mobile platform.
Long Answer:
What is your target mobile platform? iOS, WP7, WM6x, Android, etc all support SOAP, JSON, etc, because they allow you to execute standard HTTP Post and Get requests, which are required by most web services.
There is no list of web services available for use; typically, you will write your own and then consume it. That said, Twitter, Facebook, Bing, Google, all provide public web services (you need to get auth keys, and the like).