Here is an example of one that suffers from that problem:
http://blog.stackoverflow.com/
More than once has it happened to me where I click on the very prominent icon "stackoverflow: a programming community exploit" when I want to either check out some new feature implemented or read some question that is discussed in the blog but I am sent right back to the blog's home page and not the the site itself.
The link to the main site is right below the icon but the two should be swapped. The current way is just not consistent with my general web experience. Yes, a small inconvenience as a user but an inconvenience nonetheless.