Internet

http://marketingtoday.com/emarketing/index.htm

http://www.internetworldstats.com/stats.htm

http://www.internettrafficreport.com/main.htm 

http://developer.apple.com/business/macmarket/target.html

http://www.internetnews.com/stats/

http://www.internet-marketing-net.com/

http://www.marketingprofessor.com/

http://www.clickz.com/

http://www.doubleclick.com/

http://www.adotas.com

Search Engine Marketing:  http://www.marketingtoday.com/search-engine-marketing/index.htm