What is that Company that sells dirt cheap flights?

I saw an article on yahoo a few weeks ago about flights for like $15 or something outrageous. But they would only go to smaller cities. Does anyone know what company this is?What is that Company that sells dirt cheap flights?
Unfortunately Skybus is gone (no $10 fares anymore :-(), so I don't think there are any.
Hmm, not sure about the article, but I caught a $9 flight to Columbia last month. Spirit Airlines has some really cheap specials.



edit: This link has some crazy deals.

http://marketing.spiritair.com/sales/sal鈥?/a>What is that Company that sells dirt cheap flights?
If you find Company that sells dirt cheap flights, please go to this link

http://www.half2u.com/

It's sell half price tickets for you.
Please check:

Tips:

a- use flexible dates

b- use alternative airports



http://www.hotwire.com/



http://www.cheapoair.com/



http://www.kayak.com/



http://www.orbitz.com/



http://www.priceline.com/



http://www.expedia.com/default.asp



http://www.farecompare.com/



http://www.farecast.com/



http://www.airfarewatchdog.com/



http://www.cheapair.com/