A lot of development time has gone into this skin to make it an easy to use and feature rich experience for the user. Some of the features include:

User features

These are the features most immediately noticeable to the user Plus many of the standard features found in other skins - too numerous to mention

Technical features

These are the features not immediately noticeable to the user, such as internal design or XHTML/CSS issues. More often than not this list is more interesting for other skin designers :-)