Question about banana plugs

[Blu-Benny]

what is the norm.

1: using banana plugs to hook up the wire to the back of the speaker only??

2: using banana plugs to plug the wire into the recv'r??

3: both on the recv'r end and speaker end??

i wired my basement w/in wall speaker connectors so i'd have connections going from the recv'r to the wall (2 sets, 1 on each end of the wire) and then from the wall to each speaker (again, 2 sets).

pro's/con's either way??

which way is considered "correct"??