Email a friend
The most effective best way to acquire more new customers, is to encourage your existing ones to recommend you to their friends and family, which you can do by implementing an online email a friend programme.
In addition to a viral campaign which may be forwarded by email through interest or humour, you can also incentivise the process to get people to recommend you. This could be in the form of an e-voucher, a discount code, an account credit or a free white paper. You may wish to reward your recommender and their friend to maximise the likely take up of your offer. Following the maxim, 'what's in it for me?', everybody wins.
If you are going to start rewarding people for their behaviour, for example placing an order, you will need to track with certainty that a desired outcome has taken place. Similarly you should aim to test what levels of reward work best for you business in order to maximise a return for your outlay within a cost per acquisition frame work that suits your business.
AOL Broadband - Email A Friend
If you recommend a friend to AOL and they sign up you could get an e-voucher worth £30 from a choice of either Lastminute.com or Amazon.co.uk.