following the discussion on licensing, I propose an additional field in the user-profile (this can be a SE-wide thing, or just for TeX.SE, though it would probably fit in Programming.SE as well, as an example).
The idea would be that each user could state that his/her answers and questions would be also placed under an additional licencing agreement. This is important for TeX users since many normal licencing agreements for TeX are incompatible with the GPL, see this question for details.
So, in the user profile users would see a choice:
My content on TeX.SE is released under: [ ] Dual GPL/LPPL [ ] Permission to relicense [ ] Public Domain [ ] Normal GPL (default) with the following modification: <free form text-box>
(with links to the definition of each licence)
The other users, when looking at someones user-profile will only see the selected licence and the free-form text.
This is my suggestion.