Scalability seems to be a number one concern for many businesses lately. As it should be—the lead executive of an impressive CSR program told me years ago, "Success is easy... we only care about scalable success."
However, before developing a scalability strategy, I advise clients to get very clear about what it is they are trying to scale. Is it:
A technology platform
An organization / network / community / market / tribe
The relevant best practices and gotchas in each case are very different.