An excellent overview with links to specific examples and tutorials of how schools are using Google Applications including Google Sites to create free, enduring ePortfolios for students and courses.
Concepts for effective peer review using an LMS, with a liberal dose of marketing from Waypoint Outcomes, an assessment and peer review tool that powerlinks into Blackboard and Moodle
Interesting visualization of phrase / text matches found in search engines. Seems especially adept at detecting plagiarism from very recent news articles.
Addictomatic searches a wide range of live sites including blogs, micro-blogs, news and video. Search results are displayed in your own custom page. While you can’t get an RSS feed of your search, you can bookmark it.