Gossip is a magazine that appears in the episodes: Banned in Bikini Bottom and The Splinter. Squidward probably likes this magazine very much like the books: Art and Squid Ink. How the name says it, it is probably like a book full of true or false stories. It is unknown if will appear again in future episodes. Squidward is always reading some kind of magazine while slacking on his job.
It was seen again in the news-stand in town in the episode The Monster Who Came to Bikini Bottom, but the monster was not reading it was next to Toxic Waste Monthly. On the cover it showed a few woman on the cover and a few things that really are in Hollywood or the movie business. The cover was green.