Can Chinese retailer Alibaba tackle its counterfeiters?

Now that the excitement surrounding Alibaba's $25bn flotation last year has ebbed, the Chinese retail giant's share price has been falling, too.

There are concerns over its foreign expansion plans, the sale of fake goods on some of its platforms, such as TaoBao, and the effects of a slowing Chinese economy.

Can the retailer restore its reputation and bounce back? John Sudworth has more.