Lifehacker posted a great article called The Stupid Things You Do Online (and How to Fix Them). Here are some of additional comments that may also be helpful.
Stupid Thing #1: You Undervalue Your Personal Data
Did you know that when a company goes through valuation by a venture capitalist the number of email accounts is reviewed? So while you might not value your information, corporate America does.
Stupid Thing #2: You Submit Sensitive Information Over an Insecure Connection
Besides the https:// servers, users also have to have anti-malware protection that blocks keylogger programs from capturing your credit card information. Use an electronic wallet application that allows you to input credit card information without typing it. Read More→