Well... perhaps my fault partly but in 2003 installed RealNetworks RealPlayer and didnt realize I registered for membership and just now in 2008 (900 dollars later) determined I was a member... sure, part my fault... but why would they continue to charge my account when no activity logging into there service for 5 years?!? They gave me 3 month refund... 45 dollars... I was billed 900 DOLLARS !
I recommend when installing anything... don't give any card even if it is for 14 days trial... they wont make it easy for you to see that you will be billed... and after 5 years maybe give you 45 dollars refund.