You can't play if you don't show up.

The downside to doing free office hours every Monday is that periodically someone signs up for a slot, but doesn't show up. This always amazes me with entrepreneurs, because until their company has customers and traction (and to a large degree even then), the most important factor in making investments is the team. Those 30 minutes you blew off weren't "free," they were my $100 investment in your company. Getting a reputation for throwing away your investors' money is a good way to kill your company before it even starts.