Yahoo Inc is shutting down seven products, including its mobile app for Blackberry smartphones, as new Chief Executive Marissa Mayer takes a page from Google Inc’s Playbook by eliminating unsuccessful products en masse. The product shutdowns, which Yahoo announced on its official company blog on Friday, are part of what the company said are regular efforts to evaluate and review its product lineup. “The most critical question we ask is whether the experience is truly a daily habit that still resonates for all of you today,” wrote Jay Rossiter, Yahoo’s executive vice president of Platforms. The announcement represents Yahoo’s second group shutdown of products since Mayer, a former Google executive, became CEO of the struggling Web portal in July. So-called “spring cleaning” announcements, in which multiple products are shut down, have become a regular feature at Google in recent years.

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