Representing the single most accurate and comprehensive source of online
customer data, LIVE Profiles serve as the foundation for all successful
eBusiness initiatives.

Sites that can be classified into any of the other more specific jewelry categories should be listed there.

gemstones silver

Building on comprehensive user and visitor data gathered
by Coremetrics, Costco will run sophisticated profile -based merchandising
campaigns to increase customer satisfaction, drive higher conversions, and
boost return on marketing investment.

8 would

ET at the Pierre Hotel in New York City.

belong categories

bluenile.

jewelry shopping

costco. To learn more about
Coremetrics, visit http://www.

jewelry varied

has implemented Coremetrics to track and
analyze comprehensive customer and visitor behavior for the http://www. Leading online brands rely on Coremetrics LIVE Profiles
to monitor and optimize the performance of multiple marketing campaigns,
improve cross-sell and multichannel initiatives, and precisely target
customers through intelligent marketing campaigns .
(Logo: http://www.

gemstones 8

(Nasdaq: NILE)
announced today that Mark Vadon, Chief Executive Officer , will present at the
Merrill Lynch Retailing Leaders and Household Products + Cosmetics Conference
on March 22, 2005 at 2:00 p.

x gemstones

bluenile.

specific example

gemstones bracelets

"Costco is dedicated to providing the best shopping experience to our
members, both online and in our warehouses," said Ginnie Roeglin, senior vice
president of eCommerce at Costco.coremetrics.

This category is for sites that are not specific enough to belong in the other existing subcategories.

silver would

Costco Implements Coremetrics for Detailed Analysis of Online Customer and Visitor Behavior

Coremetrics services more
than 400 clients and has delivered over $250 million in documented ROI in the
past two years.

merchandise 9

charms specific

x bracelets

"With Coremetrics, Costco will be able to optimize online business performance
by bringing top-flight merchandising and targeted promotions to its Web site.

watches charms

Blue Nile to Present at the Merrill Lynch Retailing Leaders and Household Products + Cosmetic Conference

8 charms

com or call 877-721-CORE. To
learn more, visit http://www.coremetrics .

newscom.

9 charms

"
Costco is the fifth largest retailer in the United States and operates 456
warehouse stores worldwide, presenting one of the largest and most exclusive
product category selections to be found under a single roof.com) is a leading online retailer of high quality
diamonds and fine jewelry.

8 q

Coremetrics has strongly supported online privacy since its inception.

About Blue Nile
Blue Nile (http://www.

An example would be a site offering wedding bands , various gemstones, bracelets, watches, and sterling silver charms.

9 belong

"By implementing Coremetrics on our Web
site, we can now get a deeper understanding of what our customers like and
dislike about our site so we can improve their overall experience.com/privacy.

would should

, Coremetrics, the leading
provider of hosted Web analytics and precision marketing solutions, today
announced that Costco Wholesale Corp. Costco operates an international chain of membership warehouses carrying
quality, brand-name merchandise at substantially lower prices than traditional
retail stores."
Coremetrics offers the only hosted Web analytics and precision marketing
solution designed to meet the marketing, merchandising , and site-design needs
of online retailers.

Sites offering a variety of jewelry specific merchandise belong in this category.

sterling specific

com Web
site.
"Costco is a leader in creating a compelling in-store shopping experience
for its member-customers," said Joe Davis, president and CEO of Coremetrics.

The company is privately held with funding from Accel Partners
and Highland Capital Partners and is headquartered in San Mateo, California
with offices in Austin, Texas and London, England.m. Following the completion of the call, a recorded
replay of the webcast will be available for 30 days at the same Internet
address. The Blue Nile web site showcases over
55,000 independently certified diamonds and more than 1,000 styles of fine
jewelry, including rings, wedding bands, earrings, necklaces, pendants,
bracelets and watches.

should q

Costco is known for carrying top-quality
national and regional brands at prices consistently below traditional
wholesale or retail outlets.

specific 8

Categories
include groceries, candy, appliances, television and media, automotive
supplies, tires, toys, hardware, sporting goods, jewelry, watches, cameras,
books, housewares, apparel, health and beauty aids, tobacco, furniture , office
supplies, and office equipment. SEATTLE, Blue Nile, Inc.

varied shopping

com/cgi-bin/prnh/20031029/SFW048 )
A live webcast of the presentation may be accessed at
http://investor.

shopping gemstones

Individual-Level LIVE Profile Data Helps Costco Improve Online Shopping
Experience for Membership Base and Boost Marketing ROI

SAN MATEO, Calif.

About Coremetrics
Coremetrics is the leading provider of on-demand Web analytics and
precision marketing solutions, offering the industry's only Web analytics
platform that captures and stores all customer and visitor clickstream
activity to build LIVE (Lifetime Individual Visitor Experience) Profiles.com.