Dear Jo
Skype is a VoIP (Voice Over Internet Protocal) program that provides telephone style calls that can include video calls between computers and it also includes instant messaging and data transfer. You can type instant messages to a contact with skype and include data/file transfers.
Latest mobile phones have internet access and use the higher speed 3G networks and can include Skype calling or messaging between computers and mobile phones.
You can download Skype to a computer free of charge from www.skype.com. When friends or family with Skype are online the Skype program shows an online icon and then you can call them and talk or type messages and use video face to face if you have web cameras.
The Internet is provided via phone lines or mobile phone network signals. So telephone style calls are just converted to a digital signal and sent across the internet.
Skype provides calls to land line phones and mobiles around the world if you buy credit. Skype to Skype calls are free apart from standard internet connection cost or mobile network data charges.
There are various programs such as MSN and Yahoo instant messaging and of course there is Facebook and Twitter Social Networking sites.
The list I gave above are various programs that are run by one program on some internet enabled 3G mobile phones.
It is called Fring and combines all the various programs listed under one application. Using Fring on a mobile phone you can talk via Skype or send instand messages on Skype or MSN etc.
And you can update and check out Facebook or Twitter accounts.
Fring also provides video calling on some mobile phones in Skype calls.
If you buy Skype credit you can make very cheap overseas calls to landline or mobile phones using Skype on a PC or a 3G internet enabled mobile phone.
