They were all the same person I think, all using the same range if IP addresses in Australia, which have now been banned.
Ditto, and to the mods too. I only noticed one of those spam mails so either I'm really unobservant or you're all working really quickly!
I think their full name, or assumed name, is Sita Peiris by the way. If you Google the name Sita Peiris you get lots of similar marketing crap.