Here is another thing to think of with regards to business entities...Sole Proprietor has unlimited liability for anything the business does this means that any judgement cannot be discharged in bankruptcy and you are personally responsible for that obligation...trust me that really sucks, corporate entities...take your pick are set up in a way that you are only responsible for what you have into the business provided you keep all the filings, books and legal documents in order...in other words you have a separate account and you keep all transactions of the business in there...the benefits of doing this far outweigh any gains you could get from skimming. If you are audited the IRS cannot look at your personal income tax return side by side with the corporation it is like having a shield around you...this is very handy and the added bonus is that corps are a lot less likely to be audited then a sole prop.
