Hi Travis,  Basically, you can see properties listed on the MLS through one of several web sites such as Realtor.com, Zillow or Trulia.  

We use Dynamic Interactive personally which helps set-up tracking phone numbers and it records all incoming calls.

Does anyone have suggestions for other apps or web sites that may be more geared towards finding MFR properties? 

It's best if you had some web information to reference  prospective buyers to.

Just be careful of the MVP/Lean Startup methodology when interacting with the FCRA.

You will want to check out my web site for your business as well.

In a Florida tax deed  auction.Does it is mandatory to do a title seach in order to find out liens on the property besides municipal or county liens[IRS liens do not show up checking the city web],when and how can you approach the person living at the property that you are the new owner?

Again, the BiggerPockets store has some books for this or you can learn by watching podcasts, reading blogs, and interacting on the forum.

Often their response has specifics in it that show that they keep detailed records of interactions. 

Again, the BiggerPockets store has some books for this or you can learn by watching podcasts, reading blogs, and interacting on the forum.