What do you consider a good £ aff income/member of your website/month?

[notabene]

For those that capture membership.

Am curious as to whether I set my sights too high or too low...

[zinc]

Sorry i dont understand your question?

[notabene]

Sorry. It was a long day, excuse the poor grammar.

For those of us that encourage people to register on their websites, I wondered who else measures the average affiliate income per member and what good looks like?