1. Paypal sucks.
I learned this 'the hard way' over 8 years ago.
2. Don't trust escrow agents with a short posting history.
Well, that should be common sense.
4. Visa organization
I'm not sure what you mean by this.
5. How to run a microcompany based on only trust(In progress)
There are many ways to accomplish this. Hopefully someone can get something running soon.
These lessons are yet to be learned by most of you:
8. Corporate REGIStration for Bitcoin-accepting businesses is always a bad idea. (Look up the latin word 'regis'. Understand 'juris' and 'diction' too.).
Edit: For those who are lazy: Regis is Latin for "of the King". Who really owns your registered corporation?
You have a privilege (private law) to use the charter, but you don't own it. The "king" ("the state" in modern times) does. When/if they pass a statute banning Bitcoin (or use existing anti-money laundering statutes) you'll have your charter revoked (returned to it's rightful owner; the "king") so fast it will make your head spin.
This includes any/all property owned by the corporation as well.
9. Accepting Visa/Mastercard for Bitcoins will get your bank accounts frozen eventually. (Not to mention get you scammed rather badly.) This was partially learned by buybitcoins.com, despite my vocal oppositions. (Out of concern for his financial well-being, of course.)
10. Any 3rd-party processors that deal with Visa/Mastercard will get scammed and will pass this fraud onto you eventually. This includes such 'brilliant' ideas such as using Alert/Liqpay to deal Bitcoins. Enjoy getting ripped off. It will happen. I guarantee it.
11. 'Money laundering' investigations are easy to attract when your bank doesn't understand your business model. You can easily get your bank accounts frozen too. Corporate charters can be revoked by local government for almost any reason; including your inaction to a request or inability to explain what your corporation did/does.
12. Learn the difference between a privilege and a right.
13. ACH payments can be disputed and revoked. Expect scams.
14. SWIFT payments can be disputed and revoked. Expect scams.
15. Counterfeit money orders/cashier's checks
do exist. Expect scams.
I've posted many times in the past along these lines, but no one seems to listen. Oh well. I've just been sitting back and watching everyone learn these lessons like I did -- the hard way.
Without any ill will, malice, or vexation,
The Madhatter