There is no exact spam definition – but in general it’s all unwanted content that servers all over the world sends every day to thousands of mails. You can ask what for? There is no simple answer because there are many different spam categories. Some of them are just advertisements that won’t harm your computer but create a mess in your mailbox. Other can be more dangerous and contain a lot of suspicious data. What can that be? Nothing good .Viruses or software tools that are created to steal very precious information from your computer. In 21^st century many people uses internet to manage their funds, trough online banking. Imagine what would happen if your bank account password get in to some hacker hands. All you money would be in great danger. How to prevent that? You got to get yourself anti spam tool. Url filtering not only allows cleaning the mess in your inbox but also defends you from implementing this dangerous hacking soft on you personal computer. In comparison with danger it prevents – it’s worth any money. But you’ll be surprised now – it’s free or really cheap. With anti spam you are the key holder to the gate of all messages coming into you everyday. Your data is much safer, but stay tuned there are hundreds of new viruses created each day. Always remember to have the latest version of spam blocker.