I've been spending an increasingly large amount of time with some rapid development frameworks, primarily Django (Python!), Grails (Groovy / Java), and Symfony (PHP). I've been enjoying it. A lot. Life has never been better.
DRY tactics. Code portability. Who likes to repeat themselves anyway? It's a great idea.
My favorite concept to date is the Object Relational Model (ORM). Database-agnosticity is fantastic. Not sure what database you want to use? Worry about it later. A client wants to switch to MySQL because SQLServer is costing too much? No problem. How much of my codebase will I have to change? About six characters. Wow.
So why not take this concept, and apply it elsewhere? I'm currently doing some work for a startup, and we are having trouble deciding which online payment service to use/support: PayPal, Amazon Payments, or Google Checkout.
My solution is to write a webPaySystem module that integrates all of these payment systems into one single class. But, before I spend the time to write this, I'd like to extend this question to the Python / Django community:
Would you find this useful in your web (and business desktop) applications?