I have less than no sympathy for businesses with Paypal horror stories at this point. Paypal's reputation is very well known, especially in startup circles, and there are a ton of other services available that will handle payments for startups. There have been several HN threads about them, and it's not too hard to find those on searchyc.com.
If you're starting a business, and you're relying on Paypal to do it, then you're foolishly adding totally unnecessary risk to your business.