If a relational DBMS is required.
Welcome to transactional emails.
Good to have. 10K+ concurrent requests, load balancing etc.
Basic website monitoring
or Piwik? TBD
SMS verifications anyone?
Free version control
Design and wireframing?
Saving images/data if required.
Fast and easy to code. Hopefully. Development with Java is painfully slow.
Loooong term for performance.. Super fast but not suited for prototyping
Because you don't know what data you will be querying for. Perfectly suited for rapid prototyping. Altering tables in traditional, relational DBMS is painfully expensive and slow.
Performance is not great though. Ah who cares!
For future payments in US, Europe?
Or Mixpanel? Requires setting up I think.
TBD. Good to have I think. Analytics on loads of data, recommendations?