Leffe, I was trying to keep things simple hence didn't mention anything re SEO, tracking etc. The only real references I made were:
2. Set up a blog (if appropriate) and invite people to subscribe
4. Have a "call to action" on your site ... i.e. encourage the visitor to contact you, download a freebie, check out a trial, order something, book something, etc
I agree setting up dummy URLs (with re-directs etc) is often worthwhile. But at the same time, the most important thing IMO is to get people to act, especially if it means them giving their details (not that they'll always be genuine) and 'subscribing' to updates etc.
If you're going to buy data then emailing first (with a follow-up call) is sometimes better. You'll hit more people more quickly plus it gives you another reason to call. And using the likes of MailChimp will give you decent tracking.
REMEMBER: All of this can count for very little if your market research and sales skills are below par.