These sites deal with the theory behind portfolios. They discuss why teachers should use them in their classes and the benefits of portfolios. Though they do not specifically focus on webfolios they do mention that the form of portfolios vary greatly.
		Portfolios for Assessment and Instruction, Arter, Judith A. Portfolios: Assessment in Language Arts, Farr, Roger Student Portfolios: Classroom Uses, Office of Research Consumer Guide, US Department of Education Webfolio Project, California State University, Los Angeles
	The following site is one teacher's detailed journey of teaching writing with technology. Starting back in the first days of word processing and leading up to web publishing this teacher realistically talks about the benefits and challenges of his curriculum.
		Student-Writers on the Web, Nellen, Ted, with links to student projects
	Below are sample webfolios from students around the country. These focus on language; there are many student art portfolios on the Internet too.
		Student webfolio from the University of Michigan for a Writing the Information Superhighway  class. Focuses on self-assessment. Student webfolio from Michigan State University. Focuses on Rhetoric. Student webfolio from Hotchkiss High School, Colorado. Many assignments and reflections.