a) GRaham, you're not allowed to advertise here.If you go down the email advertising route be careful. You will need to have permission to hold third party information, you will need to store information securely and conform to the data protection act.
It all gets complicated and expensive.
LOLIf you get sought after subject with locations in the page title chances are you can come up in Google searches. At least it works well in the states with blogger.
For instance:
"Bathtub Resurfacing Your City"
Back to thsoe guys on the message boards. No time? How did you find the time for 10,000 posts on that site and 6,234 on the other?