NEW YORK (TheStreet) -- "Mad Money" Research Director Nicole Urken sat down with her brother, TheStreet's Ross Kenneth Urken, to help Jim Cramer understand Tumblr, the social media blogging site being bought by Yahoo! (YHOO).Cramer, who had mistakenly interpreted Tumblr as a type of drink, wasn't aware of its purpose -- or its appeal. "It was an instant turn-off," he said, referring to the topics that were provided such as recipes, animals and art. But, he did say he could understand why younger people would like these. Admitting that he may be too old for it, he noted that younger CEOs are more in touch than older ones, which is a good thing, in his mind. Cramer wondered why users would go to Tumblr, instead of Twitter or YouTube. Nicole told him, "When it comes to social media, you need a number of outlets." When Cramer asked why not have your own Web page instead, Ross responded, "Tumblr is social. You can follow people, you can 'like' people." Yahoo! reportedly bought the company for $1.1 billion. The acquisition was made to drive traffic, not collect direct revenue from Tumblr . As Nicole put it, it's Yahoo!'s way of saying, "Hey we're cool, we exist." To sign up for Jim Cramer's free Booyah! newsletter, with all of his latest articles and videos, please click here. -- Written by Bret Kenwell in New York..