I will never use them ever again for any online business. And i try to avoid using them for paying for anything online when ever i can. I refuse to link any bank account to them and if I wind up with any money in my paypal account i always spend it as soon as i can.
You might want to read this site as well before considering paypal: http://www.paypalsucks.com/
Paypal is not worth doing business with. The guys from the above post were lucky that they had a 2nd account to use. Otherwise they most likely would have lost ALL of their sales due entirely to paypal's unprofessional behavior.