side vs top navigation

[GoTerps88]

From a usability standpoint, which is better, side or top navigation? I'm also starting to see more sites utilize a sub nav directly underneath the main nav, eschewing the irksome nested menu structure.

Is there a rationale for using both top and side navigation?

Thanks in advance...

 

[monksnake]

Take a look at this article, it's a very good response to your question.

http://www.webpronews.com/topnews/2004/12/10/website-usability-breadcrumbs-and-leftside-navigation

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