If you're not sure that a particular website may be used as a scholarly source here are some links to help you evalute it.
Evaluating Web sites - Cornell
Evaluating Web Pages - UC Berkeley
The Subject Guides page is a list of websites that have been reviewed by Duckworth Library Staff and have been deemed as appropriate for academic research.
Search Engines
Scirus - a science based search engine that focuses on web pages containing scientific content.
Comparison of Google, Yahoo! and Ask.com.
