Why does Facebook and eBay make my computer super slow?

maybe viruses.. . or you could have a build of history in your cache..

Use your defrag tool to clean up the little spaces. When you add a file or a new program to a new computer, the hard drive is relatively empty so new data is saved to the hard drive in one whole block. When you need to use that information, the computer can quickly access it because it is all in one place.

As you use your computer adding files and applications, the hard drive begins to fill up. Deleting files or removing programs creates small empty gaps among the other data that the computer will reuse. After awhile, the computer is no longer saving information in large blocks. Instead, it stores information in the many little empty nooks and crannies of your hard drive. The result is that one program or file is broken up, or fragmented, into little pieces and stored in many different areas of the hard disk. The computer ingeniously keeps track of the addresses of each piece of data and puts it all together when it is needed. Yet, obviously, the more broken up the information is, the longer it takes to access the data and the slower the computer becomes. To make a computer run faster we need to defrag it, read below to find out step by step how to do this!