Mobile Trends in Travel

Mobile is flying high in the online travel industry
http://www.internetretailer.com/dailyNews.asp?id=33124

The latest research from The Nielsen Co. shows more consumers are turning to travel mobile sites and apps to access information, book flights and hotel rooms, and rent cars anytime, anywhere.

...Following are the top 10 travel mobile sites and apps gauged by unique monthly visitors, according to Nielsen:

1. Travelocity, 1.263 million, 955,000, 32.3%
2. Expedia, 1.258 million, 1.201, million, 4.7%
3. Priceline, 1.2 million, 860,000, 39.5%
4. Orbitz, 1.12 million, 904,000, 23.9%
5. Delta Airlines, 995,000, 827,000, 20.3%
6. American Airlines, 982,000, 633,000, 55.1%
7. Southwest Airlines, 956,000, 934,000, 2.4%
8. Hotels.com, 725,000, NA, NA
9. Continental Airlines, 669,000, 539,000, 24.1%
10. United Airlines, 554,000, 387,000, 43.2%

Are any hostels here using any kind of mobile technology? Mobile-friendly websites? SMS booking confirmations?