Tumblr users may notice a Starbuck cup in place of the period in the logo today: It's an ad. The period is now for sale to advertisers as the Sponsored Tumblr Dot. The ad isn't available everyday, but ...

Tumblr (remember Tumblr?) is the latest company to simplify and straighten out its logo. The microblogging site, which has struggled to avoid becoming another MySpace or Second Life as it has bled ...

You know that period at the end of the Tumblr logo? It’s for sale to advertisers, called the Sponsored Tumblr Dot. Well, it's not for sale every day, but it's open to sponsors on special days like ...