I love a great sale and I adore great customer service.
Give me what I want and based on that, give me something more that you know I'll need soon. Convey to me you are the expert I will need when I have a question about your industry. Leave me uttering the words "Wow". Make me smile the entire conversation because you've not only fixed my challenge but cut another one off at the pass... one I didn't even know was looming off in the distance. Leave me with the sincere impression that you care about my business and how I can help the businesses I care about too. Actually give me the inspiration to write your name and direct number/email down when you offer it up unsolicited.
Then... two days later, send me an email you're having a 2 hour FREE seminar 5 miles from my house in the same month on the same issue I was contacting you about.
OMG... Constant Contact. I love you.