Facebook corpus on Lindat: http://hdl.handle.net/11858/00-097C-0000-0022-FE82-7
Search the corpus via Lindat-KonText: http://lindat.mff.cuni.cz/services/kontext/run.cgi/first_form?corpname=facebook_cs_m
Polarity information: p(positive), n(negative), 0(neutral).
Exmaple: search for sentences containing ":)" with a negative polarity:
http://lindat.mff.cuni.cz/services/kontext/run.cgi/first?shuffle=1&reloa...