[188201]

The alternatives of such integrated platform is chat app, which ironically, the most popular chat app is Whatsapp owned by Facebook. So if someone built a event management software based on Whatsapp's new API and start gaining traction, facebook would steal the idea and launch their own.

[ChikkaChiChi]

The smartest move Facebook ever made was gobbling up the options most likely to be alternatives to FB once people got sick of it.