Google Came out with Google Gears, a set of APIS you can use from JavaScript to persist your web app's Data into a local database (SQLite). The idea is awesome, but I'm worried, and I'm not sure if I'm missing something here:

• You'll now have complex application logic and persistence logic in full JavaScript syntax. Feels like we're lookin at a big maintenance nightmare
• How secure can your web app really be if all data access is open for anyone with "view source"?