Use a google spreadsheet as your database.
- Google reliability and scalability
- Completely free
- The user knows what data is used and can update it easily.
Javascript:
var spreadSheet = new SpreadSheet("Test SpreadSheetAPI");
spreadSheet.getSpreadSheet(function(data) { console.log(data); });
CURL:
https://script.google.com/macros/s/AKfycbxcdb59Q8e-FvAz9IqOPIWa5cHd9gPNvZo1251NNTCtmTcYzORz/exec?method=METHOD_NAME&foo=bar
getUserName()createSpreadSheet(name)createSheet(url, name)getUserSpreadSheet(key)setUserSpreadSheet(key, value)getSpreadSheet(url, [sheetId | sheetName])getValue(id, sheetId, key)insert(id, sheetId, key, values, delimiter, [columnId])
More to come soon.