Blogger Spam

I'm curious how many of you have used the new "word verification" feature to prevent spamming on your blogger blogs? For those of you that are using it... has it worked?

I would imagine it would prevent any automated posting, but would only be a minor setback to those spamming manually.

The owner of this blog: http://www.blog-society.com/affiliateprograms/ has spammed my blog relentlessly for the last 6 days. Using various user names and comments, but always including a link back to that blog with the anchor text "affiliate program" or "affiliate program blog".

They arent accomplishing much (outside of creating extra work for me), as I've been deleting them the minute they show up. What a waste of time and energy (for both of us).