The Fortune is in the Follow-Up

Here's a common situation:

You've connected with a potential client, explained your services, and they seem excited to move forward. They even requested a proposal, and promise to review it and get back to you post-haste.

Then, nothing.

Weeks, even months, go by without a word ... no reply to emails, no returned phone calls, total radio silence.

What should you do? I say, stay in the game.