Excellent article Matt! I had lots of conversations around this at SMX earlier this year!
The challenge is finding a way to clearly segment your user groups that doesn't have the same flaw of grouping based on majority otherwise the benefits will just be averaged out.
For example, if I can figure out that the chance of someone belonging to user group A when arriving from source X is 70% then I'm still serving a potentially unoptimized UX to 30% of the users.
Obviously this isn't a problem for an app that can clearly segment its users!
The challenge is finding a way to clearly segment your user groups that doesn't have the same flaw of grouping based on majority otherwise the benefits will just be averaged out.
For example, if I can figure out that the chance of someone belonging to user group A when arriving from source X is 70% then I'm still serving a potentially unoptimized UX to 30% of the users.
Obviously this isn't a problem for an app that can clearly segment its users!