If you're an active YouTube user and/or uploader and if you use your e-mail to transmit work (as I do), 3GB per month at full speed is insufficient. Per article, I have to transmit about 100mb worth of pictures. And graphics drafts (if layered) are around 50mb each. And then there's YouTube, which, if you're surfing on a weekend, can easily pass 2-3 GB in one day.