You may be right about #1, that was to be my next attempt at monetization. Right now you can only do keyword searches on the past month, I was going to offer a service to let people search the full index for maybe $10/month. But I am now involved with another startup that is taking all my time and I am not sure when I will get the chance to try this.

I have talked to many people about #2 but was unable to figure out something compelling to sell.

Tried #3 with Peecho for about a week, not one sale!