Skype (184.108.40.2066) on MacOS (10.10.5) keeps 600Mb in the two caches below, are these both deleteable without any negative effects? Can I prevent Skype doing this with any (Skype or MacOS) config setting? or do I just have to write a crude wrapper which monitors/purges these regularly? EDIT 1: wrt effect on performance, Skype keeps large disk caches, and crashes regularly, which may well lead to fragmentation.
348M ~/Library/Caches/com.skype.skype/<username>/SKAvatarCache 213M ~/Library/Application\ Support/Skype/<username>/media_messaging/emo_cache_v2