Here's What a Display Ad in Your Gmail Looks Like
It looks like any other ad you’d typically ignore on the Web!
This screenshot comes from Greg Sterling at Search Engine Land, who got Google to acknowledge that yes, it is indeed playing around with conventional-looking Web ads in its mail service, which typically only offers text ads: “We’re always trying out new ad formats and placements in Gmail, and we recently started experimenting with image ads on messages with heavy image content.”
Sterling’s post sent many of us Web/ad nerds scurrying to our Gmail accounts to see if we could find evidence of Google’s experiment, but I have yet to see any others. If you find one, please pass it along to me at (firstname.lastname@example.org) and I’ll share it with everyone else.