Some handy little R code if you are wanting to convert a csv to arff, but may be running into some encoding issues (looking at you crowdflower corportate messaging dataset).
Simple and to the point.
Subsetted to remove the "Exclude" category and reset the factor (so Weka won't see it as an empty set).
Facebook page has been up for awhile. Previously wouldn't let us with just the ec2 address, but then we updated it with the new web address. Give us your suggestion on what you want to see there!