This paper on honeynet.org is an excellent discussion of web application security issues. Read it and weep.

I found this page over on the UC Berkeley Library site describing a set of steps to use in evaulating web pages - how to determine whether the information on the page should be trusted. The guide offers a list of suggested questions to ask, and the implications associated with the answer to those questions.

This can help you develop a critical eye when visiting a web page.read more »