Google's homepage illustrations marking notable holidays and anniversaries (like Magritte's birthday or the launch of the Hubble telescope) are playful divertissements that usually link to a page explaining those not readily evident.
But on Tuesday visitors to the Internet search engine were confronted with a bizarre animation of morphing, colliding balls that swept across the page wherever the cursor passed over them.
Google is therefore inviting a lot of web traffic from people merely trying to find out what the illustration means if it in fact means anything.
Five of the top seven Google search terms this morning were "google logo," "google balls," "google logo hidden message," "google homepage today," and "google dots."
Google itself isn't saying their directory of Google Doodle art's last listing is for September 4, when they celebrated the 25th anniversary of buckyballs.
Bloggers guessing about the home page art's meaning have suggested it's a demonstration of new browser capabilities, such as CSS4 scripting language.
But it could also be a birthday celebration of itself. Although the domain name google.com was registered on Sept. 15, 1997, and the company incorporated on Sept. 4, 1998, Google previously celebrated its birthday with Google art on Sept. 7, in 2003 (5 years) and 2004 (6 years).
Happy 12th Birthday, Google!