I actually worked alongside a team implementing Interworld at a site ccplanet.com where it was used for catalog management (I think it is still used at sister site, gaiam.com). The company doing the implementation (Q strategies) was very good and the product seemed okay. I was implementing Vignette Storyserver in TCL and my team was able to complete things much faster and easier (IMHO) than the Interworld guys just because they were bogged down with Java and app server stuff after which I have been very skeptical about the joys of web development in java. Q Strategies was formed by a big block of consultants from Interworld who were not happy with leadership so not surprised Interworld is having hard times.
