[wikwocket]

The standard answer to the problem of being sued for business reasons is to incorporate. The corporation may be sued and may even go bankrupt as a result, but in certain situations the corporate shield protects you individually. This is in the U.S.; as it appears you are in the UK you can always talk to some lawyers and accountants about best practices.

[ripsoco]

Fair point. I was thinking along the lines of whether posting statistics against unique addresses without consent could lead to successful lawsuits. I didnt originally think this - eg google maps does this with rated restaurants.

I wouldnt use an addressees personal details unless they chose to claim their address.

Your right though, id need some professional legal advice.