City teachers upset about mail clause in proposed contract
They criticize clause shutting down communication channels
Staples launches technology trade
Staples launches program allowing customers to trade used technology devices for ecash cards
Retailers offer free shipping on Monday
Retailers offer free shipping and survey ranks those with fastest service
Retailers hope back-to-school season will boost spending
After a disappointing start to summer for some retailers, many are hoping for a boost from back-to-school shopping, the second-biggest sales period of the year.