It's called a spambot, or a spider or something.
It crawls around the interweb and inveigles itself into contact forms, sending me endless nonsense emails with the words 'tit' and 'viagra' in them. There are ways of designing forms to fend off this horror, and one will be applied here as soon as I have the time. For now though, if you really need to get in touch, you can email osney at devildog dot co dot yookay. You're intelligent people; you know what I mean.