I am quite good at SEO, so the leads come and find me.

@Marcus Paras Thank you very much for the kind words & feedback. 

Also bought two on the courthouse steps but never really got into that.Then we got more into portfolios of properties, which we mostly get from networking (agents, wholesalers, other contacts, etc.)Some have also had a lot of success with SEO marketing but we haven't gotten into that much.

Plus, with your own website, you can run Google Analytics to analyze and leverage your traffic as well as a blog for SEO.

SEO 2.

Other lead gen methods are cold calling, social media, SEO (direct people who google "sell my house fast" to your website), signs and bill boards, and whatever methods you can use to let people know, YOU ARE BUYING PROPERTIES AT A DISCOUNT BUT WILL CLOSE FAST WITH CASH.

However, over time, I've learned that getting the SEO and other ranking factors to work right, you need someone who knows that well. 

Several times we hired a professor/soil scientist who taught most of the soil scientist in the state.The township/SEO (Sewage Enforcement Officer) has historic records and can tell you if a specific lot is:A. passed septic testB. failed septic testC. never testedI used to be a licensed SEO and took all the state courses to do perk tests, so am very familiar with the process.In Bigger Pockets Podcast #82 we only slightly touched on land subdivision, development and vacant lots.

@Andrzej Lipski could also be a great resource as he is doing a lot of wholesale stuff based on website SEO.

You SEO the HELL out of your website.Let's do a comparison.You will spend a lot of effort cold calling strangers.