A harmonised POS testsuite of web data, CMC and Twitter microtext, with word forms and STTS pos tags (+ some additional CMC-specific tags). UD pos tags have been automatically converted, based on the STTS pos tags. The data does not contain (manually corrected) lemma information. The original data comes from 3 different sources: a twitter dataset with 21,181 tokens, and two datasets from the Empirist shared task 2015: web data (12,718 tokens) and computer-mediated communication (10,505 tokens).