Your friends are right, if the applications you use on a regular basis don't require the extra memory, then it will go to waste. As a software developer, my memory needs on my laptop regularly dip into the 1GB+ range. I typically run an application server, IDE, and have several web browsers open at once which puts my memory usage anywhere from 1.5GB-2GB. But when I'm at home, surfing the net or playing games, I find that 1GB is sufficient. If the money is burning a hole in your pocket and you've already addressed getting a faster HD, then go ahead and spend it on the memory, but don't expect that it will make much of a difference.