Hi Menlo,
Flowdock lacks the same thing every other service currently does: They just create more noise with external service connections, instead of eliminating the biggest time killer of any fluent communication: The lookup factor.
This is basically the time you spend every week looking through your GitHub issues, Calendar entries, File Storages while coordinating with your team members.
By indexing your services and making them available to you inside an autocomplete we are attacking that problem and effectively making your communication faster, the more services you connect.