I actually contacted quite a few of the positive reviewers they listed on their site after finding them on Facebook and LinkedIn.

They focus on mobile home parks and have solid educational content on their website.Mobile Home Park Investors - http://mobilehomeparkinvestors.com - This is the LinkedIn group led by Jefferson Lilly.

Instead the pitch man was a guy who, according to LinkedIn, used to work for Phill's company.The bit about driving for dollars and identifying a motivated seller by the tarp on his roof...The homeowner facing foreclosure who answers every question by screeching, "I know!

Tell everyone what you want to do.Join the local RE groups for Austin in linkedin.  

We're also reserving prizes for those users who help promote BiggerPockets on Twitter, Facebook, LinkedIn, Google+, and on their own blog sites.

Yeah my software does as well. i mean MINE... as in I wrote it... additionally,users can  purchase DID's  (phone numbers)  for $3 +$1/mo  for use in their Text/VM broadcasting/robocalling campaings which conveniently, can be populated with names and data from my DB's which have over 200+million names/phones/emails/demographics/  social media user data, voter records, property info, deed data...etc  (all of which I have accumulated from providing scraped data, and append services for clients for a number of years)  total out right now at about 15GB  of Mysql DB's  check the google cloud image below....Obviously hooks up with both hubspot, as well as mautic.... as to allow for dragging in lead data directly to marketing automation, which works out well, when you when the lists that users buy.... from me... in my software,  already have FB/Twitter usernames, phones / emails / demographics / employer emails.. and da-da-da  ... linkedin account info.... as well as property tax data (which i do scrapes for free for users now...)   

Twitter, Facebook, LinkedIn, Google+, and even Pinterest are all great options.

Borrowing from Bryan Hancock's Linked In post:"If you want to reach your full potential, start getting uncomfortable.

Would be nice to see his score lower when I look versus when a flipper looks... or even just when he posts in the landlord forums versus the flipping forums (btw, I like J Scott, the fact I remember his name off the top of my head means I read and respect his stuff, just using him as an example of specific knowledge base).Joshua Dorkin, have you looked into what LinkedIn did with their forums (not sure if they still exist)...

If even 10% of the people reading this or any other great thread/article on the site would share it via Facebook, Twitter, LinkedIn, Google+ and so on, we'd see almost immediate growth in the number of people getting involved.