I'm currently using the FreeCreditReport.com model. Developing sites and charging low recurring monthly subscriptions ($10 to $15) seems to be the best bet in today's market. IMO.
I am investing in getting rid of my sites and domains. Yes that sounds backwards but I now have 2 strong websites that not only make me good money but take up a lot of time. I have pruned my portfolio from 650 domains 2 years ago to about 400 today. I hope to lower that even more to maybe 250. I have lots of good domains I can sell still so I hope to continue holding many for either future development or resale. I still get good offers.
I been trying to just sell off my smaller sites little by little to cut down on maintenance and hosting. Selling a few for as little as $10.
I am investing in clearance so that I can focus more.
imho...anyone wanting to develop should jump in asap.