Google SERPs New Anchor Testing

As you know Google recently caused havoc for some analytics platforms by including #anchors (aka pound signs, fragment identifiers) in SERP URLs. Just a quick post today to mention they're back! Noticed #anchors in my SERPs this morning and I've been seeing them on and off all day.

Update - Matt Cutts confirmed this issue last week but I haven't seen any hints of the new testing until now. Hat tip to Barry for the 411! :) Thanks to Ionut Alex Chitu for emailing to also point out that Google's new Wonder Wheel feature launched earlier this week, always uses AJAX URLs with #anchors. It's going to be interesting to see what impact this change has on various tools, something to be aware of for sure....