Microblogging site Twitter has made it easier to navigate every up-to-the-moment update published on its website with a newly acquired search engine, Summize.

Sarah Lacy reports on technology for Business Week, but on Sunday, technology was her worst enemy.

As she interviewed Facebook founder Mark Zuckerberg at the South by Southwest Interactive Conference and Festival, the audience was reporting on her questions and style by using Twitter, and their reviews weren’t good.