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 ...

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 ...