From what I noticed - only a handful of companies in my area I found to have a good website, well-managed social media accounts, and conversion-optimized strategies.

The person  I tried last year was not good, did not know basic things like that I did not need to pay social security on the kids salary for a family business. 

I guess I should cut back on that but I'll go crazy not being social - it's tough enough being new in a huge city with a small network.

You might also post the link to your facebook, your linked in, your twitter and all social media. 

You can purchase lists with different motivations like absentee owners, 60-90-120 days late on mortgage, pre-foreclosure, delinquent taxes, water cutoff, code violation, evictions, probate, divorce, etc. and mail or cold call.Other methods are driving for dollars, door knocking, wholesalers, craigslist, Realtors, FSBO sites, expired listings, put out bandit signs, billboards, newspapers, other offline publications.You can use pay per click/adwords, motivated seller website with SEO, facebook, Linkedin, Youtube, and other forms of online and social media marketing.If you have a big budget you can do radio, TV and billboards.

@Bin Chen Did you set up a separate EIN for your LLC or did you just use your social security # as sole proprietor?

I have a question: isnt self employment tax what pays into social security?

As a broker consider a similar move the things I have realized in RE is that people are so hung up with the social side to real estate that they frequently make decisions that are harmful to them.  

When signing up to all/any of these companies you have to give out your social security number and your bank account information.These companies want your personal bank account numbers (as they say) in order to see who your paying?

Name search, social media, ancestry.com, or PI.Send a letter - hand addressed envelope or FedEx.