i agree with everyone else, 1HR is memorable, in some ways better than your average NNN
i think we will see any and all L and N combinations under 4 characters do very well in mobi .... better imo, than they do in dot com, simply because speed of address entry will trump uniqueness of the name
pretty much any 4-character N or L can be branded
even with qwerty keyboards there will still be a huge number of people carrying very small traditional clamshell phones, as a result, serious mobi sites will want very fast address entry and short addresses
unlike the "big screen web", the value of mobi names will actually be determined by the kind of text entry people are using