Apple's MobileMe problems are now well-documented, most recently by Walt Mossberg in the Wall Street Journal. So much promise...so little delivery. A great idea that could be a great product, if it just worked. (I am a longtime Apple .Mac customer and am certainly not happy to see the service prove so incorrigible.)
So, what's the alternative? As you might imagine, open source provides a compelling answer.
Funambol has been offering its open-source "MobileMe" service for a wide variety of devices, not just the iPhone. In fact, Funambol now supports over 1.5 billion devices worldwide. It's called myFunambol and it's a great example of what open source can do. It's true push, works over-the-air (OTA), and doesn't require an "@me.com" email address.
In other words, Funambol brings MobileMe-esque sync that actually works, and works on a huge array of devices and services. It's a way for Yahoo! or any other service provider to create a valuable, connected experience with its customers.
Funambol is a also great way for service providers to build out their own MobileMe experience, without hitching a wagon to Apple. I love Apple, but I also love choice. You can get a glimpse of what Funambol is like by giving myFunambol a spin. If you're a service provider, download the source code and start building your own service.