Edited.. I thought the blogs did require an authentication. I was looking into where they go into a pending file then be approved but if it doesn't have authentication that may work. I will look into that!
Thank you Susan - end of a busy week - authentication was the term I was looking for and we have it on Groups but not Blogs. I don't see any spam in the groups and I am more than happy to authenticate to post a blog, although as Chikky says a certain amount of antisocial behaviour goes with the territory these days (the price for such open internet access) and frankly I bypass the spam entries which stand out like a sore thumb and read the blogs that grab my attention.
Cathy