Our marketing guy swears by them. I think if you have the time to learn yourself then as always all the information you need is free and available online but if you're running a serious business and you need to learn fast and have someone else do all the research for you to keep up with the latest trends then its money well spent. If you're professional then you'll be will to spend the cash.
Erm... fek, arse, girls!
Erm... fek, arse, girls!