Don't facilitate spammers
In case I haven't made it obvious before -- If you have my email address, don't pass it on to financial services companies in order that they can email me telling me that you recommend them. It won't earn you any rewards or commission, all it will do is earn my contempt for you. If you want to recommend a company you use, do so by passing their details to me and not by passing my details to them, and even then only in response to a need for those services expressed my me.