WAP: WAP, Wireless Application Protocol is a system which allows WAP enabled mobile phones to surf the net. The sites you can visit have to be specially written to support WAP but these are growing fast so theres plenty to see. Basically WAP looks pretty naff compared to a PC browser, but it's a step in the right direction and seems to be very popular.
Never be without a minicab again, Cab Numbers works though WAP, SMS or the web and simply tells you where your nearest minicab firms are including their phone number and opening times. Brilliant !