So many times it happens: a salesman or store clerk puts puts a paper (or electronic screen) in front of us and asks for our signature. We often sign in these situations without reading the documents or thinking about it very much. If we ask we are told that they are just the standard documents and that the "fine print" is not important. If the recent financial crisis has taught as anything it surely is that we should not trust the large banks, credit card companies and other financial actors. If necessary, the "fine print" will be held against you and your signature will be used as evidence that you fully understood and agreed  to it. The reality of the situation will be ignored. 

The lesson is truly "let the buyer be ware." Sign nothing that you have not read or do not understand. Ask for documents to be changed if they do not reflect what has been told to you in leading up to the transaction. Get any promises made in writing.  Take your business elsewhere if a business is unwilling to do so.  Finally, reward businesses that do treat you fairly by being a loyal customer.