My goal is to collect enough rentals that in the next 15 years, I could retire from my career in broadcasting (which is very fun and exciting).

Don't broadcast it.

I suspect the people/companies who are mailing have given little thought in segmenting their data and I am no different than the person who sees a billboard on the side of a highway, meaning it's broadcast generically.Point is, you need to filter for specific triggers that motivate people to want to sell.

They will take bids for a week then broadcast out the bids to give bidders a chance to make another offer.  

They will take bids for a week then broadcast out the bids to give bidders a chance to make another offer.

Gerald Demers Gerald, I'm saying that if you were to broadcast a property in craigslist,  etc,  that looks more like an agent.  

I don't want to broadcast the location.

I start reading and listen to broadcast.

I just sold a deal to someone I met there at an event that I broadcasted a property that we had for sale. 

This is going to make things really sing when you want to perform third party integrations such as Twilio, Sky Broadcast, GetResponse/Aweber, etc into your CRM.Always great to talk to a fellow REI interested in tech and looking forward to following your reviews as you test other platforms.