Don't suppose they're German sites? I've been getting a ton of them, with some days having more than 100 such submissions, but they're easy to mass delete from the Validate table through the SQL Monitor, since they typically all have the same email address or URL. Still, quite annoying. What's the motivation for endlessly submitting such garbage when it clearly won't be accepted? Hoping something will slip through the cracks?

I suspect (although I have no way of knowing with any certainty) that lists are going around with Links sites' addresses for mass-submission purposes. I hope I'm wrong...

Dan