There was a time in BoingBoing's history, before their editors had "made it", that it was an entertaining and thought-provoking platform discussing online censorship and privacy rights. Some time around 2005-2006 their thinking shifted and it became a platform to promote science fiction novels and the careers of their editors. People noticed and began commenting about this on their site. They declared these people trolls and began censoring them. People noticed this and commented more, and it turned into such a vicious cycle that they eventually removed comments from their site altogether. After a year or two without comments they eventually put them back, but it's obvious they have a full-time comment moderator on staff to disemvowel anyone who speaks critically of them.
Ultimately I think their behavior harms the movements that they originally helped foster online, as evidenced by organizations that they used to be tightly affiliated with. You don't hear much from the EFF or ACLU about BoingBoing anymore.