Not Always Full Speed Ahead

The NYTimes Asks What is a megabit worth? And what the heck is a megabit anyway? These questions are hard to avoid for consumers trying to make sense of the fast-growing menu of options for high-speed Internet access.
In many cases, consumer advocates and industry analysts said, customers do not get the maximum promised speed, or anywhere near it, from their cable and digital subscriber line connections. Instead, the phrase “up to” refers to speeds attainable under ideal conditions, like when a D.S.L. user is near the phone company’s central switching office.