I was thinking about this quite a while already. It is not always possible to do a interview online (CAWI) or via telephone (CATI). When programming is necessary CAPI comes into the game.

However, most CAPI-Tools are old and boring and additionally you have to have still another program.

However, wouldn't it be greate to be able to use Limesurvey for all those purposes. However, even with UMTS/3G it is not always possible or reliable enough to do it with a online survey tool.