NEW YORK: TheraBiogen, maker of over-the-counter nasal sprays, is running a Times Square event this week as part of a larger campaign to ramp up sales for TheraMax Cold & Flu.

Visitors to Times Square are encouraged to “check in” at the event using Facebook or Foursquare, while a street team hands out samples of TheraMax Cold & Flu. The company expects to upload testimonials from participants to YouTube after the event concludes.

Establishing a social media presence for the campaign has ...