Solid advice from Charlie O'Donnell about what makes him tick in terms of introductions and approaches by entrepreneurs. Some interesting quotes:
At the same time, don't try and overthink what I might find interesting or not. That's my job, and half the companies we've wound up investing in are probably things you'd never think we'd go for.
And:
In person time is precious. I have a limited amount of it, and more importantly, so does the entrepreneur. When you add up the time it takes for them to get to my office and back, if I already know I'm not going to get there on something, the last thing I want to do is to take up that much time from an entrepreneur. So, don't be put off or disappointed if you can't get the in person--I'm really just trying to respect your time.
And finally:
Whenever an early stage entrepreneur tells me they're not raising capital, I always say, "Ok, well, I was going to give you $2mm on $20mm pre, but since you're not raising..." You're always raising--it's just a question of at what price.