How difficult would it be to create a website which allowed a user to register with multiple websites at the same time? e.g. Say I have five websites which need my users would want to sign up to in one go.
The obvious barriers that I can see are how to communicate with another website without being seen as 'spam'. How to pass through the spam deterrants, i.e. 'type the following letters'
One reason I want to do this is that I am involved in some 'pay per lead' affiliate programs and usually my visitors will only sign up to the very first program on the list because of the effort in signing up to more than one. It would benefit both myself and my customer if they could select which programs they wanted to register from a list and then do so in one form completion.
Any help would be very much appreciated!