Edit: I suppose one could read this post: http://jasonlbaptiste.com/startups/distribution-distribution...
MailFinch: Cold calls and asking for referrals. NotaryCRM: lots of SEO (notice the "find a notary" directory and the theme of almost all of the blog posts)
For both, there was a lot of call-to-action testing (in terms of verbal calls to action during my phone/in-person conversations) and rapid iteration (breaking features down into the smallest chunks and deploying often).
More recently (like, a week ago) I built a really basic site to force myself to learn a little more about consumer-focused community building.
As with all of my ideas, making money comes a close second behind the most important thing to me: learning something new.