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atons of… ? Comparison across users ? Comparison across genres ? Comparison across times ? Comparison across (varieties of) languages Applicatons of… ?Compiling a specialized dictionary ?Detecting the topic ?Genre analysis ?Contrastive Interlanguage Analysis ?…… Limitations to… ?Keywords: ? Do keywords have to be single words? Phraseology seems more interesting! ? Do keywords have to be lexical words? POS tag sequences may also be interesting. ? Can we bring to