SQL Express edition for production use

Can SQL Server Express edition be used in Production for small scale business applications?
Did anyone has any experience/exposure on that?
What factors do we need to consider to confirm small scale application (apart from DB size/Memory/Transactions frequency)?

Appreciate your quick responses!!

Many thanks in advance folks!!


If you can live with the limitations: Microsoft SQL Server Express supports 1 physical processor, 1 GB memory, and 10 GB storage
It is free and if Express with it's limitations can support your application's needs then it's a great deal.