There have been several efforts on social media text POS tagging in recent years, but almost exclusively on Twitter and mostly for English (Darling et al., 2012;Owoputi et al., 2013;Derczynski et al., 2013) and German (Rehbein, 2013;Neunerdt et al., 2014).
when working with Facebook messages, we found several long posts, with a high number of code alternation points (6-8 alternation points are very common).