This is the new logo for StumbleUpon, a service which helps you discover new content on the web.
StumbleUpon’s New Logo
This is the sage advice provided by design blog Brand New.
I like to urge designers to always ask themselves: “Does this logo look like a penis?” The answer has to be a resounding “No”. If there is just a slight hesitation, then it probably does look like a penis.
A helpful tip for remembering this advice is ABC – Always Be Checking-if-your-design-looks-like-a-penis.