Right now, 333.mobi is again up for auction at Godaddy. It ends today, and is currently at 115 dollars (reserve not met). Given that this is probably one of the best .mobi numerics, it will be interesting to see the price that it gets to. But given a reserve, it may not sell. But from the previous threads, it seems to have gone up to 2k, correct? If so, that is either a great sign, or high speculation.
With regards to the conversation above, I think both make excellent points. There has indeed been a rise in movement on .mobi, but that is also because any sales compared to few or zero is a rise. I have just decided to get in on this market (but with only very short domains, and only excellent numerical patterns). Why?
Short names, as well as patterns are selling.
Look at .co (which does seem to have a stronger base than .mobi). Their NNNs are in the hundreds now (each), where months ago, people could not give them away on Namepros.
I have no idea if .mobi will go in that direction. But the trend seems to be to revive older extensions, and particularly related to their numerics).
If you can get a NN.mobi, or good number NNN.mobi, for a clearance price (which .mobi is now), then I say go for it. In fact, backing up my statements with money, given that .mobi is on sale for 99 cents, I spent some time and scoured through good combo possibilities (66, 77, 88, 99, 666, 777, 888, and 999) and found the very best combinations available.
Will they sell? I have no clue. But I paid a dollar a domain, and I have a year to either see it take off, or drop them and lose 100 dollars. Not the worst way to test your theory on short domains. Even if .mobi sells for 1 percent of .com (or even that), if the direction of short domains is going to continue in this way, then one could do quite well.
Again, just don't pay 20 dollar per every .mobi hand registration. That would be my advice.