Can't you block individual images in your browser?
The last time those GD snowflakes showed up, that's just what I did, and I haven't seen them this time. (I'm assuming from your post that Boris put them back on the site.)
For what it's worth, I found them obnoxiously irritating too, although that should be obvious considering that I went to the trouble to have the browser block them.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .