Mopay is a site where you can sell your old mobile for cash and until the end of March, they're giving a minimum of 10% of the value of every phone sold to Help the Aged. It's a great charity, who fight to free disadvantaged older people from poverty, isolation and neglect. And best of all, the campaign is being supported by everyone's favourite Nana, Liz Smith.

So, do this and you get the following: a warm fuzzy feeling ...