Maybe because I am scouting around blog UK a bit more than usual, I am seeing an awful lot of commercial posts. There are people who sell; they sell space and time; there are people who sell appliances; sell your granny if they could. Some such posts are likely to contain malicious links to trojans, spyware and suchlike.
Blog sites are obviously becoming fair game for online advertising by individuals and sales outlets for others. They don’t require a paid up subscription like the major business sites online and the cyber market places. There are too many to ‘police’. They are going to clog up the blog waves, these sales hounds are going to be another kind of nuisance with their spam. Some are going to cause unsuspecting bloggers a great deal of angst.