[mixedbit]

It of course depends on the problem, no architecture is good for everything. REST has its cost, it usually requires more work and careful design then going RPC way, but for some kind of problems it can be really beneficial when done right.

Imagine you have a company that does custom mobile apps for external customers. A very popular topic, a lot of companies today want to have their own apps in addition to standard web pages.

Most of these apps are very similar (you can browse come content, purchase some service, etc.). Your company can go RPC way and create a custom interface and a custom client for each customer, with a lot of duplication and substantial maintenance cost. Or your can make larger upfront investment and create a generic REST client and then only design resources and representations for each new customer.