A computer is not an inexpensive purchase; it's an investment. They are not inexpensive, and therefore it is wise to get precisely what you need. If you buy one that does not have all of the things you need, you will not be satisfied. So use the tips here to decipher the type of desktop you need and how to best buy one.
What is Pligg?

Pligg is an open source content management system that lets you easily create your own user-powered website.