This is why I wish Google Circles were reversed. The current method is fine if you actually have stuff you want to post to a public database but still hide from your boss. Otherwise it's only fine if you know exactly what kind of content every single one of your followers wants to see from you.

I would much rather be able to mark all of my posts as "Technology" or "Music" or "Politics", where they are all publicly viewable from my page but my followers decide which kinds of categories they want to see from me in their feed. Let the end user control what they consider 'spammy' - not the source user who doesn't know what the end user wants to see.