You're a serious blogger. With a background in technical writing and journalism, you supply your readers with a daily dose of thoughtfully-written, highly valuable, easily-actionable content, and you take pride in the fact that you accomplish this task with nothing more than good ole' fashioned words (and a few pictures, just to keep with the times).
However, you begin to notice your readership numbers dwindling, if only ever so slightly. Comments just aren't being posted like they used to. Inbound links are becoming increasingly rare, despite your efforts to write content with useful links to peers and competitors.