Coachsurfing, an older free accommodation service, trades purely in reputation and goodwill.

FORBES: AirBnB Speaks to More than Just Money

Fried also publishes The Buyback Letter Premium Edition, which trades more frequently than his standard service.

FORBES: Buyback Buy List

We also need to have better macroeconomic policy that ensures full employment so that wages are high for everyone, and we need to reemphasize the trades and other mid-skill service jobs, and decredentialize, delicence, our economy, so that there are many things you can do without a piece of paper.

FORBES: Does Higher Education Need To Go Back To The Fifties?

Employees of banks could shut down computers that make quick arbitrage trades across markets, using denial-of-service attacks to overwhelm servers and potentially cause millions in losses.

FORBES: Magazine Article

Click here for updated mining and energy trades with a 30-day free trial of Professional Timing Service.

FORBES: GM Building Sale Shows REIT Resurgence

This service, when it goes live (expected July 1) will affect actual trades.

FORBES: Are Banks Using The Cloud?

Earlier this year Currensee launched the Trade Leaders investment program, which allows users to piggyback on the trades of over 100 top traders by linking their brokerage accounts to the service.

FORBES: Facebook Meets Forex