People have become reliant upon SaaS-based services like Basecamp, Salesforce, Freshbooks, GoogleDocs, etc. There's no guarantee these services will a) be around forever or b) be up at all times to allow you to access your data. There's an opportunity to create a backup service that runs locally and sucks a snapshot of all your data out of these systems so you have a copy that resides on your servers. There are creative models in how this could be billed (ie. let people use it for free so they're covered and pay only when they need to get at the backup).