nathanfish.com

This Wired article touches on the issues associated with SaaS and data portability. The problem extends into the enterprise further, with significant business decisions being based on the lack of data portability. Business will many times build a solution in-house, investing significant time and money in a non-core business component because of the importance of [...]

If your thinking about supporting Open ID, so your users can use their MySpace, Google, Facebook, or another service identity provider you should consider https://rpxnow.com/. Integration is simple, it supports all the major service providers and adds some nice analytics on top. Save yourself some time and effort, integrate once and support them all.