As the number of travelers increased in 2010 in comparison to 2009, so did the complaints.

Out of the millions of people who traveled this year, airline passengers were among the worst, most likely due to the bag fees spike, torrential weather and new full-body security scanners.

The uproar over the pat downs didn't amount to much during the peak Thanksgiving travel period, and the Christmas holiday has been plagued with a wintry weather snarl on roads and at airports in the U.S. and Europe.

via 2010: Year of the angry traveler -

And with the recent snowstorms on the East Coast, Nashville, Atlanta and Dallas, it doesn't look like travelers will be more pleasant in 2011, either.