1) Participation, remediation, and bricolage are the three key components of digital culture according to the author.
2) Participation is exemplified by independent media centers that embrace open publishing and collaborative media production.
3) Remediation involves manipulating dominant ways of doing things to challenge mainstream approaches, as seen in examples like remixing old and new media.
4) Bricolage refers to creating objects from materials at hand, reusing and recombining existing artifacts, as seen on sites like Indymedia.