We've been playing with mobile for a bit now, and we are getting decent results. The problem I do see is that many of the Adult mobile developers are a bit lazy, and don't tailor the proper video format for the device being used. While MP4 video will work in most cases, a .M4V video will look much better on the iPhone/iPod Touch. Some Blackberry devices work better using a DivX format (Bold, Curve) while the Storm works better with MP4. Mobile users tend to be loyal to the format that works best on their device!
We are doing mobile formats in MP4, M4V, DivX Mobile, WMV and even 3GP for cellphone users. All the videos we have done in the last year are available in all those mobile formats, and it really does keep users happy and around.
I'm still doing work on auto-redirecting devices (a real pain in the ass). I'm developing with WURLF to detect and redirect devices to pages with stylesheets designed for that device. There is still work to do. But iPhone users can see an example by going to carolcox.com on their device. That takes you to a page designed for the iPhone and with .M4V video formats that are preferred by the iPhone.
I still have some work to do before everything is finished, and still have to touch up design and lay-out. I'm more concerned with the operation than the graphical design at the moment. As I mentioned, mobile users are loyal to their devices and you really want to give them all the best you can. Their appreciation will turn into sales.
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