Hmm, I would think thrice, before I go his path again. Thought it was a clever idea to use the mixture of easy to maintain spreadsheets, the cron service and JSON to feed huge satellite images into a tiling service (zoom.it) and let Google autonomously update and serve the list of daily mosaics as JSON.

I got used to daily time out messages, but waiting 1 min for a (cached!) 10 kb JSON list is far too much. However, organizing and correcting data using an online spreadsheet saves a lot of time and is kinda fun.