the total addressable market of gmail is around 120M mailboxes. Building a gadget won't get you all of those users, you'll still need to convince them to add your gadget.
Same thing goes for Outlook, yet it the market is bigger. There are 600M Outlook users, and over 5M xobni downloads, but you'll still have to convince users to add your gadget. Xobni will just make it super easy for you to take the gadget you made for gmail, and provide the same functionality to your Outlook users. Some of those users will be provided by Xobni. And some of those users will be introduced to Xobni & your gadget by the gadget developer. The point is this provides access to a huge market with very little effort.
Spent a few weeks building a gadget so I have a few opinions on the matter :-).
The point of the post was to clarify that you guys are enabling people to plug into your plugin. So the addressable market is the few million people who are actively using Xobni. Not all 600 million outlook users.
Now if you guys provided a redistributable that allowed me to package up my Gadget and ACTUALLY sell to all 600million outlook users, that would catch my attention. But one caveat is it would need to allow for the actual Xobni mining stuff (the memory/cpu hog) to be toggled on/off, but still allow for the contextual gadget to show up.
I like what you guys are doing, and will probably participate. However, just had to let out a few gripes first ;-)