I won't respond to the poll (I was tempted), but if the question were turned around that a random guy contacted me out of the blue by email to tell me he thought I was attractive, how I reacted would probably depend on the content of the email. If it was phrased in one of the following ways:
"Hey, I think you're interesting and sexy."
"hey i think your interesting and sexy"
"i think ur interstng n sxy"
My response would likely be "BLOCK LIST" and then I'd feel all creepy all day.
But, if there were more to it, explaining how he knows me (since I don't have a personal website, perhaps it would be something about some of my posts on PF, or some articles of mine he's read) and told me a little about himself, then I might consider at least replying and seeing what happens, or would at least be flattered enough to respond with a thanks but no thanks type reply.
Then again, I'm not famous, so don't have guys falling over me all the time. If my inbox was filled with messages from men fawning over me every day, I'd probably get bored of it and ignore it, and just brush it off as coming from another crazy fan.