The Agent directory https://www.biggerpockets.com/real-estate-companies/find-real-estate-agent-directory would be a good place to search for realtors near you. 

The goal was to see if it would be able to pay for its self, more internet presence can never hurt, and having a dedicated page that ends up on the BP directory can never be a bad thing.

There are of course many names and companies that come up when I simply type in 'Home Cash Buyers' in for example Texas, or Utah or Los Angeles or wherever into any web browser, however I wonder if there was a way of purchasing directories of information, or if there were data 'aggregators' out there who could pull the information together in one place for people like me?

Or what is everyone experience with these national companies on BP resources directories? 

You can ask fellow agents here https://www.biggerpockets.com/real-estate-companies/find-real-estate-agent-directory

Here's our directory of county assessor and recorder offices around the country.

Reed - Have you gone through our Note Investing forums, our articles directory and the BiggerPockets Blog yet?

If you want to get your website indexed in Google all you have to do is write a article put a backlink to your website in it and submit it for free to Ezine Articles or any other free article directory.

I think we're building a directory or a place where people can find names of companies or individuals to contact for different needs. 

Also - definitely read this article on how to get listed on BiggerPockets as a hard money lender in our Hard Money Lender Directory!