Labrocca is an example of what I spoke of. And that is fine, caution is wise, and I certainly cannot guarantee a good return on Mobi domains.
Sometimes a market collapses and stays down. Sometimes it recovers and then explodes. This second possibility is where great fortunes are made. The Mobi market collapsed due to domainer issues. People saw that quick profits were not happening, particularly when viewed from the high levels Mobi reached soon after it was released. So domainers started dumping - just what Jesse just advised you to do.
LLL.mobi had a minimum value of $200 a couple years ago. I should repeat that - the worst three letter Mobi could easily be sold for $200. Buyers were scouring the market for them. The reason was the potential of the mobile internet - then and now expected to outshine the PC internet.
Then came the recession. Buyers evaporated in all areas of domaining. Many owners of Mobi intended to make short term profits and did not have the capital to pay renewals. The market flooded and prices collapsed. Since Mobi was new the market was more dominated by short term holders than most other segments. LLL.mobis can be had for a few dollars these days, although the buyout holds, for the moment.
It is critical to note that these are domainer events, only concerned with sales between investors and speculators.
In the outside world events move on. The list of large companies with active Mobi sites (including redirects) is, I believe, longer than any other gTLD except Com. Mobile-specific industries such as luxury hotel chains and luxury automobiles are nearing 100% coverage. New investors, such as the OP, are frequently encountered both here and on the Mobi forum. These new investors, I believe, are interested in capitalizing on the potential of the mobile web and see Mobi as a potential way to do that.
No, defaultuser, the mobile web is just beginning. The president of Google has stated that in the future he expects his company to make more money from mobile than from PC. Morgan Stanley just released a report predicting that mobile web usage will overtake PC usage in about 5 years. These are extraordinary statements, foretelling a market surge as great as any in our lifetimes.
The success of the mobile web is NOT the same as the success of Mobi. Nobody expects Mobi to replace Com (I have far more Coms than Mobis, myself).
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Mobile users have different priorities, and long downloads, pinching and scrolling are not among them, so there always will be a need for mobile-friendly sites.
Device detection, subdomains and the other alternatives can work, but they lack the clear, simple message: "This website is built for your phone". I believe that message is enough to give Mobi a significant slice of the mobile web - and a slice of a market that huge is enough to push prices to highly profitable levels.
But, remember, there are several "if's" in this. Mobi is very speculative at this point. That is why I say to limit it to a small percentage of your holdings. And to invest only for the long term.