from my point of view, is better to use Adobe AIR directly without the need of any third party as SpringWidgets or Yourminis.
As far as I know, both springwidgets and yourminis use this technology (AIR) but you need to build your widgets using flash.
now, the good thing about AIR is that you can build your widgets either in flash or HTML so if you use AIR directly you are not limited only to do flash stuff but HTML as well...
Dashboard, well, depends on your target, if you are targeting only mac users, why develop on something different? dashboard is the way to go
but if your target is broader, then I would say AIR (again) as is cross-platform.
Google and yahoo widgets? no thanks!
I know there are many (MANY) people who like them but I had a bad experience with Google widgets and the super huge environment you need to install to run your widgets...
I'm pretty sure people don't like installing environments, that's why my desktop widgets are standalone, don't need to be installed and behave as any other file (you can drag them, move them to a folder, delete them...)
Here in Widgipedia there are many Google & Yahoo widgets developers, I'm expecting they will tell us more to convince us to use these platforms so let's listen to what they say
salut!
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