FlightStats.com
 

Saw this mentioned in a NYTimes article this morning - clearly so did everyone else as the site was really slow this morning.

Overall a good site - a fine example of taking data and providing "information" - including some nice content from other sites and linking.

Free for now though I can't tell how they will be able to continue so without advertising or the like.

Thanks,
alect for jogging my memory. I also saw that piece in the NY Times and was impressed. Nice website. ^