Paul Graham is the author of Hackers and Painters and a partner in the Venture Capital firm Y Combinator. His essay on The Future of Web Startups is a current look at the web startup space from the point of view of an active VC. It's an excellent read and useful information to help build the mindset you need to succeed with a web based startup in this changing environment.

http://www.paulgraham.com/webstartups.html