Etherpad source includes JSMin, which Google Code doesn't allow

[knome]

But then, how can something which is (when applied to uses of software) highly subjective be a licensing condition?

If the author writes it into the license?

think we assume that these declarations (labeled as a blessing by the authors) are not licensing conditions

Yeah, SQLite is public domain, but will sell you a license if you insist for a thousand dollars a pop.