For example Airbnb collects and remits all state and local taxes in Pinellas County but only does 1 of the 2 in Bradenton county just south. 

Partnering with a wholesaler sounds fine, but check the real estate licensing laws in your state before bringing a buyer for a commission.You might consider getting your real estate agent's license and legitimately earn what your skills, drive, and experience truly command. exactly wholesaling or bird dogging is not a life time or long time occupation  RE sales can be lifetime and if your any good at it at about year 10 you should be getting all your sales from referrals and such.

They often have access to off-market listings and can also help you navigate on-market listings on MLS.

There's a good chance the issue(s) you face has already been discussed and answered.Ask questions in the appropriate forum.

Well, I heard about this tactic, and was so excited to try it out until I tried looking through Jackson County’s public records portal here in Kansas City.

Let me address your questions and provide insight from a lender's perspective:1.

I went to sign up on the advice of a friend and realized I had signed up 11 years ago and never used the site.

I'd like to not "find out the hard way" if one of these sites are not a good match for me.The ones I'm considering are Propstream, Property Radar, ListSource, and PropwireSomething to note, I am looking to return to doing some wholesale deals, using criteria such as absentee owner, out of state owner, tax delinquent, vacant, liens, and pre-foreclosure..

I would put it on craigslist and FB to see if anyone wants it for free.Otherwise call a junk removal or abandoned car removal service. 

I believe solid insurance and a good umbrella policy will suffice.