Many readers of the blog are now protesting in Blogger Help Forum, in ignorance of the reasons for the interstitial warning. Their actions are similar to those of the readers of The Daily Coyote, last year.
To the owners of the blog:
You need to contact your readers, and advise them to knock it off. You aren't bothering Blogger (this is a weekend) - but you are interfering with other bloggers being helped, because of your Denial Of Service technique (intentional or not). If you don't want your readers to have to click on the interstitial button (once per reader, only), remove the problem pictures.
(Update 7/21): Rick Klau, Blogger Product Manager, has provided an authoritative comment.
We simply responded to the fact that a number of posts there do, in fact, contain nudity. Visitors to the site flagged the blog as containing objectionable content, and as set out in our TOS, blogs that contain nudity may contain an interstitial to let readers know what they will find when they click through.