You could, of course, keep to the driest topics, the most tamed opinions, nothing spicier than an animal cracker, but for some this self-censorship of "your most honest, primitive, real thoughts" (to quote Naked Lunch) is tantamount to a sin, just one step up from lying to your diary.
If you are trying to keep it safe, are you truly communicating what is on your mind, or are you pasteurizing your output, homogenizing it, adding a touch of gamma radiation and a run through the freeze-drier, until the final result is palatable pablum, certainly inoffensive and low-residue, but ultimately unworth either consumption or production?
Blogging seems to have shifted on the risk/reward scale and people have responded as such. A pity.