If you're connected to the Internet, one of the cheapest ways of communicating with friends and family is instant messaging. Not only is it incredibly cheap but it's easy enough for anyone to use. The only trouble is that there are so many different networks available; you may find yourself using different clients to communicate with different people. Before you begin installing multiple clients, there are multi-platform clients available which will enable you to use a single application to communicate with others, irrespective of network. 21 May 2009