New Delhi, July 11 -- Zomato's attempt to mark its 18th anniversary with a logo-free newspaper advertisement turned into an unexpected guessing game after readers struggled to identify the brand. The online food delivery company published a full-page advertisement in a leading national daily on July 10 without displaying its logo or name. Instead, it relied entirely on its familiar red-and-white colour palette, apparently banking on strong brand recognition.

The advertisement carried the line: "Thank you for keeping us in your hearts (and your bank statements)." A note at the bottom added: "No logo required, you know who we are."

Rather than instantly recognising the campaign, many readers were left uncertain about its origin. Several b...