I love the SaaS (Software as a Service) business model because it encourages us to keep adding value to our offering.
In the spirit of transparency, this is what our Dev team is currently working on (ordered by highest to lowest priority) --
Integrating with LinkedIn (Outbox initially, Inbox to follow)..... Update : Complete
Integrating with Facebook Groups (Outbox initially, Inbox to follow).... Update : Complete
Integrating with Google+ (The Google+ API is not an open API yet, so we're working on getting Google's blessing before we can begin work on this one. Outbox initially, Inbox to follow)
Opening up our API - We built Stacker to fully support OAuth 2.0. Our native Android app already uses OAuth to sign users in, so this one shouldn't be too difficult to put in place. The API will also make it easy for services like IFTTT, Zapier and others to integrate with Stacker.
Want something integrated that's not in the list? Let me know in the comments.