I can't get a dialling tone levocetirizine and fexofenadine brand names As you might expect, 94 percent of recruiters use LinkedIn and 65 percent use Facebook. Lest you focus your energies only on the big two, bear in mind that more than half of recruiters and HR staffing specialists are using Twitter. And Jobvite identifies other "specialized, localized and up-and-coming social networks" that recruiters utilize to source talent: Instagram, Vimeo, GitHub, Stack Overflow, XING, Yammer and Pinterest.