Loved Adium. Upsides: I no longer had to care what messenger my friends used, it was all the same to me. Extensible and theme-able which was just the way I lik

Loved Adium. Upsides: I no longer had to care what messenger my friends used, it was all the same to me. Extensible and theme-able which was just the way I liked my software at the time. Growl integration. Downsides: I made the mistake of installing and using a FFVII-themed sound pack that invoked a Pavlovian response in me every time I heard certain sound effects from that game. Took the better part of a decade after I stopped using Adium to shake that off.