I want to use an LGPL-licensed library in my app for Microsoft's app marketplace.  Is that OK?
Here is an encompassing answer:
https://web.archive.org/web/20220712000832/http://answers.google.com/answers/threadview/id/439136.html
In short: yes you can. But one important thing to take care of is that the GNU LGPL covered library is dynamically linked, not statically mixed with the main application.
It should also be possible to exchange that dynamically linked library for an independently compiled build. Otherwise you have likely intertwined the library and main application code.
