[slyn]

I believe technically this would be considered APM in all games. In starcraft 1+2 even selecting a control group is considered an action, so simply hiting 1 2 3 4 5 in succession without building units or changing rallies or really doing anything would count as 5 actions.

eAPM, or effective APM is a more advanced attempt to filter out spammy actions (as you describe) and was made up a bit after APM first came out as a statistic and people started gaming the APM stat to try and inflate their egos.

In SC2 there is a bug on the live patch where the APM tab in replays or live games shows the eAPM stat, and the eAPM tab shows the APM stat due to some silly mixup that made it past QA.