In a pilot cluster randomised trial the investigators will explore the feasibility and likely impact of online methods of raising awareness of webCBT, assessing how many people with depression respond to geographically restricted Google and local website advertisements. The investigators will explore costs of recruitment and define and document the best online methods that might subsequently be used in a definitive trial comparing online with mass media and GP centred methods for raising awareness. The investigators will compare intervention with control areas to estimate impact on registration levels and compare rate of completion of webCBT of these 'additional' registrants with other registrants. Recommendations will be made for a subsequent trial comparing online with other methods.