what is up with these emails I receive constantly...

On a bunch of sites I have an old form and constantly I receive these sort of emails?
what is their purpose? Who would open this crap..?

name = lkdsfkljshdfkjs

email = [email protected]

inquiry = ;lksadshfkjsdhfsjkd, http://www.dkjshfjksdfhksjdf.com djhsfkjsdhfs

submit = Submit

Any suggestions???

Its automated posting spam.
It doesnt know its an email form, it just posts to any form, hoping its a comment form, guestbook etc.
If the random characters show up somewhere on your site, target acquired.
Then the real spam (viagra etc) will start.