Many of you might have read that data from around 150,000 Gmail accounts got disappeared recently. Obviously that was temporary
But I can now afford a smile because I know about the issue. That was surely not the case that all those Gmail users might have felt when they opened their mailbox and found it empty, and they had no idea what had happened.
In this type of case you will most likely look for some official Google info from the net. But before you go somewhere else searching for that, you might want to take a look at this page. Here you can find the daily status of most of the Google Apps that you may be using whether it is Gmail, Gtalk, Google Groups or Google Spreadsheets. If something goes wrong or any case of outage, Google is most likely to update the status here. You can click on any status icon and find out the problem details and when it got fixed or when it will be probably fixed.
Outage of this magnitude is not got going to happen in near future I think, but there can be maintenance or small outage issues. And you now know where to start your search for finding the relevant information