Yahoo had all the products needed to be relevant again. What was needed is deep integration between these products. For instance, using Pipes in Yahoo Mail to c

Yahoo had all the products needed to be relevant again. What was needed is deep integration between these products. For instance, using Pipes in Yahoo Mail to create a custom Flickr feed. That's service integration. How about updating Groups UX/UI ? this product is obviously useful why does it look like it was made in 2000 ? Or is there so much technical debt that one cannot touch any code without having to rewrite everything at Yahoo ?