Spam - it ain't what it used to be!

When I was a kid, this was Spam:

Even if you've never eaten it, you might have seen the famous Monty Python video.

Nowadays, it seems this is spam:

SSDN Technologies seem to be my biggest fans - they just won't stop posting spam comments.

I've asked them to stop - they never appear to you guys anyway, as I moderate all comments first (for exactly this reason).

SSDN ignore my emails, and when I tweeted them they just blocked me - charming eh?

They're not alone of course - plenty of SEO companies and other training companies try too.