This is particularly true of angel groups (like CommonAngels in the Boston area), of which I am a member.

One additional note on angel investors: Many of them invest with the motivation to be “involved” with startups (in a way, live vicariously through them). As such, they may be more likely to give their time to a startup since they enjoy it. Though VCs can certainly add value, they’re often not as passionate about it as angels that were prior entrepreneurs.

Personally, I love talking to startups and enjoy the entrepreneurial process.