I need to add a license to the samples repository (license suggestions welcome). The samples are all so short and generic that I'm not sure what legal significance it would actually have, but it's worth doing anyway if only to promote sharing and contributions.
You say "the samples are all so short" but there have been cases [+] where a very few lines were found by a court to infringe a copyright. Keep in mind that the heirs or purchasers of your copyrights might not be as benevolent as you.
As for suggestions, it depends entirely on your motives. The GPL would force users of your code to license their code under GPL also (if distributed to others.) An MIT or BSD license would only require attribution (a copyright notice) in the distribution. Personally? I'd prefer you went MIT or BSD.
+ - I've worked with former employees of companies where this kind of thing happened. I know this is vague and anecdotal, but I'll see what public information I can find just in case someone Really Must Know these cases
It has disputed legal effect in the US, too. But people (individuals and businesses) in practice don't seem to be concerned by it -- in either jurisdiction, or most others -- enough to not use software that is dedicated to the public domain like SQLite, so as a creator if your concern is signalling to people that it is okay to use it, a PD dedication seems likely to be clean.
And any license text is unlikely to have been vetted by lawyers familiar with the legal system of every foreign jurisdiction where it might be applied, so you probably have the same problem with them (and the more complex the terms are, the more likely that they have some unforeseen problem in an unconsidered jurisdiction.)
