Seems as though we has someone decide to spam quite a few people via the PM system today. Fairly sophisticated too as there is a flood control for PM's to prevent this type of thing. The logs show it was a bot as the PM were sent 1 minute and 2 seconds apart and there were almost 100 before someone reported the suspicious PM and the "user" was banned. It' things such as this that force us site owners to change settings where someone has to have x number of posts on the site before they can use the PM system. I'm not quite there yet but another one of these will have me thinking about that setting more. Sorry for the inconvenience folks. Serendipity will not bother you again.