Allow people to suggested themes/grouping categories, then a category database in the background of Mentimeter should automatically figure out a minimum number of relevant categories. How it would work: filter all words including spelling mistakes, have a ‘thesaurus’ in the background with typical most relevant categories, eliminate doubles (real doubles and semantic doubles) and come up with a minimal list. This list should also be sorted by logical proximity of categories (so the most close ones should stand together), enabled by the intelligent Thesaurus