Amazon.com, Inc. Internet retailer said net sales increased 37% to $4.13 billion in the first quarter 2008, compared with $3.02 million a year ago.

First quarter net income increased 30% to $143 million or $0.34 per diluted share compared with net income of $111 million or $0.26 per share.

The number of sellers using fulfillment by Amazon increased by more than 50% compared with fourth quarter 2007. North America segment sales, representing the Company''s U.S. and Canadian sites, were $2.13 billion, up 31% from first quarter 2007.

International segment sales, representing the Company''s U.K., German, Japanese, French and Chinese sites, were $2.01 billion, up 44% from first quarter 2007, and increased to 49% of worldwide net sales compared with 46%.

Worldwide media sales grew 28% to $2.54 billion in first quarter 2008, compared with $1.99 billion in first quarter 2007. Worldwide electronics & other general merchandise sales surged 56% to $1.48 billion in first quarter 2008, compared with $0.95 billion in first quarter 2007, and increased to 36% of worldwide net sales compared with 31%.

Second quarter 2008 net sales are expected to be between $3.875 billion and $4.075 billion, or to grow between 34% and 41% compared with second quarter 2007.

Full year 2008 expectations net sales are expected to be between $19.1 billion and $20.0 billion or to grow between 29% and 35% compared to 2007.

Amazon.com, Inc., (AMZN: chart) shares declined $2.96 or 4% to $78.03.

Chipotle Mexican Grill, Inc. operator of Mexican food restaurants said revenue increased 29.3% in the first quarter 2008 to $305.3 million compared with $236 million in the quarter first 2007.

First quarter net income was $17.3 million or $0.52 per diluted share compared with $12.4 million or $0.38 per share a year ago.

The chain opened 28 new restaurants in the quarter and same store sales increased 10.2% in the quarter.

The comparable restaurant sales are expected to increase in the mid single digit range and open 130 to 140 new restaurants.

Restaurant level operating margins increased to 21.2% in the first quarter of 2008 from 20.7% in the first quarter of 2007, primarily due to menu price increases and lower labor costs.

Jack Hartung, Chief Financial Officer said, ""We expect to open more restaurants this year than ever before with 130 to 140 openings as well as growing diluted earnings per share, over the long-term, at an average annual rate of at least 25% though we continue to face significant challenges in the near term.""

Chipotle Mexican Grill, Inc. (CMG: chart) Stock fell $6.35, or 5.8%, at $103.59.