(I am also a Shumway contributor)
Sadly, YouTube videos that have embedded ads seem to be Flash-only.
I'm assuming there's a Chrome equivalent. I've completely disabled Flash in my browser now. Feels good.
I do a lot of development with closed source software as well, but when I do open source, I take the point of only using copyleft licenses.
You should really read up on the licenses and the intent behind them; contributing back was never the point.
The artwork in Firefox had a proprietary copyright license.
As for the license: The rebranded programs are available under Mozilla's
standard MPL/GPL/LGPL tri-license. Like Mozilla, the
default icons are under the same tri-license, but unlike
Mozilla, there are no trademark restrictions.[1] http://slashdot.org/comments.pl?sid=225606&cid=18272276
>>> NOTE: This was true as of 2007
These are all the GNU packages not under a copyleft license I have been able to verify. I have tried to err on the side of caution, which means all the packages listed here are GNU and not copyleft, but there might be some non-copyleft GNU packages that I have failed to list:
Kawa [fsf.org]: licensed under the Kawa License [gnu.org], which is an X-11/MIT style license. Kawa is a Scheme/Emacs Lisp environment that runs on Java, in case you were wondering.
GNU less [fsf.org]: the page says it is licensed under a SimplePermissiveNowarranty, but if you download the latest less tarball from ftp.gnu.org [gnu.org], you will find it is GPLd. However, older versions of less were non-copyleft [gnu.org], and they still are, as you can still download them.
Ncurses [gnu.org], which is distributed under an X11-style license.
Proto [fsf.org], which is is a tool for finding C and C++ function prototypes (someone please explain to me what that means), in the Public Domain. This one is not downloadable from the GNU ftp, but I guess that, if they list it as a GNU project, it must be.
Quexo [fsf.org], xquery implementation using Kawa to compile to java bytecode. Under the Kawa license, which means an X11-style license.
Speex [fsf.org], an audio compression codec for voice, under the Xiph.org license (a modified BSD)
At least one other non-GNU programs is listed as being GNU on the directory, like Slib [fsf.org], a portable scheme library, which under a simple permissive non-warranty license.They may choose to "relicense" it under GPL if all the contributed agree.
What you suggest cannot legally be done. However, Apache is GPL compatible, so it can still be used in a GPL project, though its license will not change.
IANAL