[xwiki-users] XWiki Script Coexistence

As XWiki becomes more popular, hopefully a wide variety of scripts will become available and easy to install thanks to the new packaging system. I'm wondering if we need to do anything to ensure scripts coexist peacefully. For example, I'm considering installing the Tagging script, but I'm concerned that its use of window.onload and maybe functions it defines will clash with other javascript code on the site. Also, should there be a specific Javascript library that we expect XWiki scripts to use, so that a page doesn't have to load up several toolkits just so that different scripts can call their Ajax functions? Furthermore, AFAIK it's not possible to define namespaces in Velocity. I assume it's possible several scripts will try to use the same variable names within the same page, resulting in confusion. Not sure what workarounds there are for this. Any thoughts? Am I just being paranoid? How do systems like Google ig allow many custom widgets on the same page without clashes? Regards, Robin.