While I can see the logic of Tony Roberts' argument that old PCs should be sent to the poorer countries, there is a flaw in his argument (Give old PCs to developing world, Letters blog, letters.computing.co.uk).

In the UK, old PCs, like all electrical equipment, have to be recycled at the expense of the manufacturer and according to stringent environmental rules. Send a PC to the Third World and eventually it will fail and may well have to be dumped as the type of recycling available in the UK just won't be there.
Added to that, old PCs are energy-hungry and the places they are being sent to are energy-poor.

John Loader