thanks a lot. This was exactly the answer I was looking for. And sorry to all because my questions wasn't concrete enough.
Basically I wrote an office app which works fine already. So, my idea was to distribute it as an xpi and a stand alone app. I assumed that the xpi shouldn't cause problems (which you also confirmed, thx) at all but the stand alone app is tricky.
The lawyer issue is quite simple: who to ask? As you know there are a lot of dicussions in the web and when you ask two lawyers you'll get 3 answers. Of course I read the license but if everything would be 100% clear then even this newsgroup would be obsolete. Another example is the discussion around SCO who claim that GPL isn't valid at all. I don't want to go into that discussion right now but what I want to say, is that I can't effort to give a few thousands bugs for a legal issue on an app which I want to give away for 10-50$ or so.
So, my hope was that I got some responses like "sure, I sell my xy app since ages. no prob. go ahead." or "Be aware of ...". But this hope was a bit childish, I'm afraid.
Thanks again
RK
Rainer, there are a few reasons why this question has a complex answer:
1) Mozilla has undergone a relicensing process, and so you need to make sure of what licenses the files you are wanting to use from Mozilla are under. Not all files in the Mozilla tree are neccessarily available under the same license (see http://www.mozilla.org/MPL/relicensing-faq.html)
2) It depends on exactly what you mean by writing an app for Mozilla, whether it is a plug-in (.xpi) which if it doesn't include Mozilla source code could be distributed under any license you choose, or whether it is a separate application based on the Mozilla source code.
None of this is meant to negate what anyone else has said about not getting legal advice in a newsgroup ... but maybe you didn't know where on the web to look for the info, hopefully that helps
David
