Nielsen/Netratings' MegaView Online Retail Report measures at-work and at-home Internet usage. Here is some snippets of information from their report pulled from their press release and from Internet Retailer's May 2005 Magazine:

Who has the best Conversion Rates?

Merchant	Conversion Rate
QVC	16.3%
Lands' End	14.8%
Sportsman's Guide	13.5%
FTD.com	13.4%
L.L. Bean	13.4%
Amazon	12.8%
Coldwater Creek	12.7%
eBay	12.3%
Yahoo! Shopping	12.1%
Proflowers	11.8%
ColumbiaHouse	11.2%
Williams-Sonoma	10.7%
Lillian Vernon	10.5%
American Eagle	10.4%
Ticketmaster	9.9%

What are the best Categories based on Order Size?

Product Category	Average Order Size (US$)
Computer Hardware	584.47
Event & Movie Tickets	121.60
Automotive	119.23
Office Supplies	102.47
Consumer Electronics	99.12
Child/Baby Care	86.13
Sporting Goods & Outdoor Activities	74.15
Home & Garden	69.99
Shoes & Athletic Footwear	53.14
Flowers, Greetings, & Specialty Gifts	51.61
Computer Software	46.76
Jewelry & Watches	46.62
Health/Wellness/Beauty	45.94
Apparel & Accessories	44.68
Toys, Games & Hobbies	40.41

More interesting stats:

• Among the top 100 retailers, the average conversion rate was 4.9 percent for all retailers.
• 69% of retail purchases transacted online were conducted via a broadband connection during November 2004.
• Broadband customers spend on average $158.21 per person, 34% higher than the $117.89 average spent by narrowband users
• Conversion rates for broadband shoppers reached 26%, compared to 21% for narrowband users.

"Brick-and-mortar retailers are noticeably absent among the top performers in online sales conversion rates," Heather Dougherty, senior retail analyst, Nielsen//NetRatings said. "While traffic is high to popular brick-and-mortar Web sites, visitors are often researching purchases to be made offline."