11.  But Travelocity.com and other online travel businesses are closely watching Orbitz, a planned site backed by big airlines.

12.  But while the whole universe of online travel is growing fast, it represents only a fraction of all the tickets sold.

13.  Dan Saul, president of Boston-based Smarterliving.com, an online travel company, founded his company three years ago as a hobby.

14.  E-ticketing has helped speed the growth of online travel booking, which airlines also have encouraged because it cuts processing costs.

15.  Even investors are doing better with online travel companies than with most other Internet stocks.

16.  Even as many Internet companies close and the online affiliates of big companies scale back their plans, the online travel industry is booming.

17.  For new online travel shoppers, Expedia.com is a good starting place.

18.  For the online travel companies, even the worst news can have a silver lining.

19.  Greg Slyngstad, Microsoft Travel Technologies product unit manager, said Microsoft began working on software for an online travel reservation system two years ago.

20.  Her agency is featured on the online travel network vacation.com.