article_snippet: The livestreaming app was the "SXSW sweetheart" this year, despite having only launched on February 27.
article_snippet: The livestreaming app's been adding users rapidly ever since -- even Jimmy Fallon is streaming even Jimmy Fallon life using Meerkat.
article_snippet: Several people said it broke Several people record for the longest Meerkat stream Several people had ever watched.
highlights_snippet: Meerkat launched February 27 but has caught on quickly .