How do I send facebook app invites to multiple friends of the authenticated user via Javascript SDK (I'm not using the facebook Request dialogs because I need a slightly customized dialog whereby I could allow a different action for those friends that are already users of my app).
Also I want to clarify that my app is not a game but an webapp like StackOverflow itself but I allowed it to be a Canvas app on facebook(just to be eligible to send app notification, do I need to consider more seriously when making it as a canvas app, downsides?)
Thirdly, Am I eligible being a webapp(which is not a game) to send invites on behalf of users & other notifications to user? I ask this because most of the places I saw requests docs, it mentioned for games not general webapps/websites.