Spam / strange usernames / strange posts

I never open their links, if they don't have adverts in their profiles or bio then I don't delete them, but 99% have links in their registration so they just get the spambuster
function used on them, it also blocks their ISP but often they come back on a different ISP. There is somebody who sspams using chains of Physiotherapists and their websites. I have emailed the website owners in the passed and told them that they are contravening the data protection act as somebody has hacked their contacts list and is using it to spam. They get told to change the passwords they use and we generally haven't had repeat spamming. There must be a lot of sad people in China with nothing better to do than trawl the www and joining forums to spam them - it's good for the membership count though!