Do not rename SharePoint Site Column "Title"

WSS 3.0 Site Column "Title" is the default site column on the content type Item. This column should not be renamed. Often it's tempting to rename it to something more relevant in a list, when the content type of the list is being edited:

However, since it's a system site column, changing it affects every list in the entire site collection even if the change was initiated in a subsite. What's worse, it cannot be changed back to the name back to "Title". it gives this error when you attempt to change it back:

“The Column name that you entered is already in use or reserved”

This is obviously a bug but the SharePoint team disagree to some extent. The solution is to program against the object model and update the name:

SPSite siteCollection = new SPSite("http://siteCollectionUrl");

SPField field = siteCollection.RootWeb.Fields[""];

field.Title = "Title";

field.Update();

This page discusses the issue in more detail and provides a small console application that runs the above code. http://sharepoint.microsoft.com/blogs/fromthefield/Lists/Posts/Post.aspx?ID=15