How do you get hundreds of millions of people to consider downloading your app? One of the only answers is Facebook's app install ads. With the app stores overrun and every company going mobile, app install ads are Facebook's big chance to monetize mobile. Companies like 1-800-Flowers and Poshmark say the ads are already a hit, and I think they ...

ThredUP, the online children’s clothes consignment shop, is today launching into a new vertical with the debut of a store for women’s secondhand clothing. The move, which puts the service up against competitors like Poshmark and Threadflip, follows its expansion into junior clothing announced at the beginning of the year. The women’s site had previously launched into beta in February, ...