The blog spam charge makes me wonder about blog formats. On Google+, I basically run a share plog most of the time. One or two lines of comment, usually why I t

The blog spam charge makes me wonder about blog formats. On Google+, I basically run a share plog most of the time. One or two lines of comment, usually why I think it is worthy of a read or a quick summary of main points. What exactly qualifies as blog spam?