Logo Tracking in Instagram

How do you know when people are referencing your brand, but don't mention it by name?  Do like Cadbury, and use image recognition technology to monitor for your logo.

Last week I was at the Olympic Park (Hockey - yay), and bought one of the Cadbury Gold Medals (effectively an over-sized coin, with a ribbon).

I then took a picture of it, and posted it to Instagram (& Twitter) with the caption 'Gold Medal!!!'

Within a couple of minutes Cadbury had liked it and written 'Congratulations'

Very well done...

Update - It's been pointed out that they might have just monitored Instagram & Twitter for words like 'medal'...