quoting Matrix:

*sees ascii penis on almost-texan flag*

not sure if srs

It is a useful clue, but it's especially obscure and probably not necessary to the solution.

There are a lot of clues like that.

edit: Rhetorica got one right on IRC
00:40 <@Rhetorica> Nort, I am convinced that #5 is Nessari.
[29 minutes later]
01:09 <@Rhetorica> Nort, http://en.wikipedia.org/wiki/Nias_language ?