I'm aware the answer to this question is not a straightforward one as there are many factors to be considered:
Sales from website referrals (as a result of improved serps) ETC
But I was wondering if anyone has a method or formula for calculating what their inbound links are worth to their website? I know it can only ever be a guestimate but I have been asked to try and put a report together as part of a web development argument and I'm aware that this could be a mammoth task.
Any hints/tips greatly appreciated :)