Talking ShopWhere should you focus your online marketing? Try the office.

Internet users are shopping at work. An estimated 60 percent of the $53 billion spent online in the United States in 2001 occurred at the office, according to research firm ComScore Networks. You can attract the attention--and dollars--of this growing audience. All you need to know is when, where and how.

• Target by time.Sending out an e-mail? Planning to buy ad space on another Web site? Ask if you can run your promotion between 7 a.m. and 5 p.m. on weekdays. Aim for 9 a.m. to noon, which are the peak Internet usage hours at work.

Even if you're purchasing keywords on pay-per-placement search engines such as Overture, you can incorporate this strategy. Boost your listing and bid price to a top position during peak work hours. You can stretch your budget on expensive keywords, if these clicks convert to orders.