(6) It has ads. But only good ads.
Gmail isn't a traditional webmail account. There are no pop-ups, untargeted banner ads or warnings urging you to buy more storage. Gmail however, will often place a few highly relevant, text ads adjacent to the body of your email. You'll also see links to related web pages you might find of interest.

What "good ad" would show if a spam email made it's way through for a penis enlargement? grin

KY Cream?

Okay, the page did clear a few things up though.