Either go tit for tat or don't waste any more energy than necessary. I've mostly encountered situations where there's bad-faith negotiation, in which case I either walk or (if I'm in the advantageous position) actively make the process more tiring and frustrating with delays, bumping the quote, etc.<p>People, in general, have trouble sticking to promises surrounding interpersonal plans. This is not just a business thing, it's a "I can barely deal with the world" thing. People have their issues, and operate at the selfish, reptilian level the majority of the time(regardless of self-image). Rather than call them jerks for behaving like what they are, figure out how to tame them instead. That's the most noble thing you can do.<p>I'll use ample amounts of time to socialize and give advice. But when it's time to discuss paid work and livelihoods are at stake, I cut out the flake-outs really quickly. Filtering and hedging happens at the stage of these early meet-and-greet communications: If they say they're interested, do they also indicate that they'll work to reach you? If they want to schedule something, do they actually give date and time options? Red flags of effort/reward can appear all over this stuff. If they want you to do a test project and the scope and spec indicates some possibility of theft of work, either walk or design in a (non-destructive) time bomb that forces them to contact you again to negotiate payment for a fix.<p>I got introduced through a mutual friend to someone who had a minor programming job - something so trivial that outsourcing would actually be the appropriate choice, but I gave him a quote anyway. He got back to me almost an entire month later with a vague voice mail message saying "uh, tell me when you're downtown next so we can meet." I haven't replied - because in those two interactions, he's signaled a lack of research and poor ability to efficiently move things forward. It might be for a friend, but for the money, it'd take too much of my time to get to the invoicing stage relative to other things I have going. If I have to meet him again, I'll point him to eLance.