As Israel presses a massive manhunt for three teens believed kidnapped by Hamas, Israeli and Palestinian activists are fighting an online battle over their disappearance under the hashtag #BringBackOurBoys. Just hours after the teenagers' disappearance was made public on Friday, Israeli activists set up a Facebook page by that name which by Wednesday had received nearly 100,000 "likes." There, supporters of the campaign have posted thousands of messages or "selfies" from across the world showing sympathisers holding up handmade **tices or banners calling for the release of the three students, two of whom are mi**rs. Gilad Shaer and Naftali Frenkel, both 16, and 19-year-old Eyal Ifrach, went missing late Thursday from a popular hitchhiking spot near Gush Etzion settlement bloc in the southern West Bank. Prime Minister Benjamin Netanyahu has accused Hamas militants of kidnapping them, and ordered a major *****down on the Islamist movement's West Bank network.