Every so often I clean out the spam ‘comments’ on this blog. These are captured very effectively by a plug-in called Akismet.
Which is just as well. Because do you have any idea of the size of the problem? On this tiny, unimportant blog I presently have in my spam folder 474 items which have been intercepted in just the last nine days.
Update: In the fifteen minutes or so it took me to prepare the above post (I was fiddling with YouTube settings) four more items of spam appeared. Ridiculous.