Its been almost a year that .mobi registration started but very few domains are developed now. All good domains are in the hand of lazy domains like me (I dont have any .mobi domains anyway) .So, all .mobi domains are being unused. I have not seen more than 5 sites with .mobi domains yet.
Domainers are lazy people, they only collects domains an sell them. So they grabbed all the good .mobi domain names but developers seems not much intrested on developing .mobi. I am looking at various places where people buy and sell domain, other domains are still hot on sale but .mobi is rare. Very few people are buying .mobi domain. Sounds like .mobi is just going to be like .info domains.