THE GREAT THING about webapps is that they are continually being upgraded. Take GMail for example. A few months ago, it got confused when you tried to separate addresses with semicolons (it insisted on commas). Now you can use either way.

Compare to MS Outlook -- It only allows semicolons (complains about commas). And the only way to fix it is to buy a new version of Outlook (if it's fixed).

Continuous improvement -- this is the Japanese concept of kaizen.