Wednesday linkfest

Here’s this week’s linkfest:

What every freelancer should know. Advice from a salon.com writer on traps and tricks.
Where are all the great ideas? Harvard Business Review editor asks where should we be looking for the next wave of big ideas?
Mistakes pro bloggers make. Solid advice on contracts for blogging and what rights to fight for. (Hat tip, Working Girl)
Report of amazon.com changing prices per user. According to this report, they dynamically change prices based on their profile of you in some cases.