I've been lurking on the forums mostly, reading occasional blog posts, listening to a few podcasts, but I shall be doing that no longer. 

I occasionally buy probate houses that include cars in the garage. 

I'm a fix and flipper.To answer your question above, I'm not a wholesaler, but I do occasionally wholesale deals when I get more inventory than I can handle since my business is really small at this time.

While I am sure that I will occasionally do referral business; I am more interested in representing myself in transactions than securing other people's listings.

I occasionally see some of them; I say hi, make small talk and then get away from them.

They do occasionally audit their accts, from what I hear.

You also need to figure in (as in pay or set aside) certain percentages for occasional repairs, big expenses down the road, property management (just in case you get tired of landlording someday), and vacancy (what happens when a tenant leaves and you don't get another one right away? 

Anyone can make a mistake and they do happen, so people will overlook the occasional "I missed that", but they will not work with "shysters".In short, the answer is yes, the wholesaler should know just as much about how to do an analysis as the buyer/investor in order to earn and keep a good reputation.

There are occasionally lenders that don't require escrow, but one of the provisions of the loan is normally to keep taxes and insurance paid.   

Occasionally asset managers will make deal specific terms like non-refundable deposits.