Online Resources

What do I look for when selecting online resources to use in the classroom?

Spelling accuracy~ I feel if the author is concerned with credibility they will also be concerned with spelling.
References~ Has the author of the site provided their information including their references?
Bias~ What type of website is it and is it biased? Believe it or not it is very possible to create a site with completely true, yet totally skewed information. Does the author provide a balanced argument, or is he/she one sided?
Date~ How old is the information being provided? Is it possible the information has changed?
Efficiency~ Does the site have a lot of graphics that will take a long time to load? This would be especially important on a school server that tends to be slower or when you are going to be having several students accessing the same site at the same time.
Readability~ Is the information on the site at the same level as my students. If I am asking elementary students to use the site for research I want to ensure the writing and words are not significantly above their level.

These are the main things I look for when evaluating a site!