Quite true on that last bit. At least he gave me the opportunity to know that he was (in my eyes) a jerk before I wasted any time on him.
The inevitable consequence of placing a woman-seeking-man ad is getting a lot of responses. Typically (for me) only a few responses will be engaging, well-written, focused on reality (i.e. discussing turn-ons rather than telling an erotic story), and generally sincere (taking the time to tell a bit about themselves, asking about me, and so on). I will email them back in hopes of generating an email exchange that's more of the same, and to confirm that their expectations are sufficiently close to my own. Then we meet - for coffee, in public. We talk about the finer points of play expectations, confirm compatibility, and generally give ourselves a chance to make sure that there aren't any spidey senses a-tingle. Only then would I consent to any sort of play.
Is it risky? Yes. I view it as no riskier than meeting people in a real-life setting, just with the added busywork of sorting and writing/replying to emails. People in real life can creep you out or misrepresent themselves too. Online, you can weed out the folks you don't want near you without them knowing your name or your face... and in that very limited sense, making the initial contact via Craigslist is actually more comfortable, because I can keep *myself* anonymous at my discretion.