Last week I wrote a tip called 7 Habits of highly inefficient Internet Users. The very first habit I wrote about was the use of old browsers. Literally, the next day PayPal (the leading online payment source for eBay and person-to-person payments) announced that it would stop supporting old browsers and users who did not upgrade to more modern and safer browsers would not be able to use the service. This will not be an isolated incident. Some banks also require the use of at least Internet Explorer 6 with all its updates or Firefox 2.0.
If you are still using an older browser and like to shop online or do banking online, you need to upgrade your browser immediately. Read my tip from last week that I linked above for more information.