Step Away From the Spell-Checker. A University of Pittsburgh study reveals that using the spell-check button can create problems for writers and editors who rely too heavily on the software. While a spell-checker can identify some misspelled words, it is not always so reliable when used to correct grammatical errors. [Wired News]

Actually this problem has existed for some time in different forms. Way, way back in time when I was going to school the same concern was expressed over calculators. At the time the concern were expressed that the general population would gradually cease to be able to add, subtract, multiple, and divide without the benefit of a calculator. I don't see where people's computation skills have been affected. Most people are too lazy to find their calculator. The challenge has always been to avoid complacency and laziness when using a tool like spell-check. Spell-check requires a higher mental effort since you are looking at two more refined and sophisticated groups of errors, errors that you have made and spell-check does not catch and those errors that spell-check finds but are not actually errors.