Honestly, it is a lot of work, and there are some big pitfalls you want to avoid, but its not rocket science. 

Those reviews are just part of it, no matter how much we try.

We can only do the best we can trying to beat the fraudsters by leveraging tools.Regarding fake SSN the screening services picks up on mismatches.

There's always a fine line between investors/people trying to sell something

Quote from @Lorraine Hadden: I have client who are try to wait for interest rates to come down rather than buying what they can afford for the best rate and hold.

If you have not yet, try building your financial model with this in mind.  

•Set up notifications when a listing matches my criteria.Has anyone built or tried something similar?

I would try to buy properties starting at a specific date so not large ticket items come up.

I also have $100,000 in the bank, and I'm trying to figure out what steps to take next.

I'm trying to analyze my first property and not sure how to set it up to run the number using the calculator tools here. 2 of the units are successful Airbnb short term rentals, and the other two units are month to month rentals to existing tenants.