Probably meaningless for our uses. IF you followed someone it would record what that person in particular has posted in a section of your profile. there is a "following" section if you click your "Profile" section.
It would be helpful if we were to get hundreds of active members constantly posting and you would like to make sure you see what certain people were doing in all that mess.
In our case, we're automatically following everyone, because there really probably won't be many people here.