Quantity is good, but I'd like to tell that I've 17 articles under one pen name giving me about 38,000 views and it's not something to be very proud of.
Originally Posted by Simon
If you do your keyword research right, you'll be a rockstar at it. If you ain't good at that, then you may write 100 articles and reap the same benefits as someone writing 5 with proper keyword research.
(There is a post in the Internet Marketing section called Keyword Research 101. Should help. )
Build businesses, not quick money makers.