I think it's nice to be able to scale well on a user's screen, rather than make the users pan and zoom. In a time when users surf the web from such a wide variety of devices, ranging from smartphones to ultra-mobile PCs, each with its own, possibly non-standard resolution, I think it's important to keep user-experience at a high level when your site is viewed on such screens. Regarding the text length, it could be bounded by a certain ratio, so it would fit nicely within the layout. I think there are also frameworks that may help with writing a site in a fluid manner, and help with coding maintainability.
