eBay ( EBAY), the online auction giant, soared 12% in after-hours trading Wednesday on rising fourth-quarter profits. The San Jose, Calif., company raked in $430.5 million excluding items, or 31 cents a share, compared with $340.1 million, or 24 cents a share, a year ago. Analysts polled by Thomson Financial were looking for 28 cents a share.

Revenue surged 29% to $1.72 billion from a year ago, also beating the $1.67 billion target. Looking ahead, the company forecasts full-year non-GAAP income of between $1.25 and $1.29 a share on revenue of $7.05 billion to $7.3 billion. Analysts foresee $1.23 a share on $7.15 billion in sales. Shares were trading up $3.61 to $33.61 in after-hours action.

Netflix ( NFLX) was leaping after the online movie-rental company powered past estimates with fourth-quarter income of $14.9 million, or 21 cents a share. Profits were higher last year, at $38.2 million, or 57 cents a share, but the Street was looking for only 15 cents a share. Revenue climbed 44% from a year ago to $277.2 million, meeting the consensus. Shares of the Los Gatos, Calif., company were gaining $2.25, or 9.9%, to $25.

AsiaInfo ( ASIA) swung to a fourth-quarter profit of $2.1 million, or 4 cents a share, from last year's big $39.8 million loss, or 60 cents a share. Full-year 2006 also saw a solid upside recovery, with a profit of $5.8 million, or 11 cents a share, compared with a loss of $37.2 million, or 53 cents a share, in 2005. The China-based software firm was adding 53 cents, or 6.7%, to $8.45.

Westell Technologies ( WSTL) slid after the Aurora, Ill., company earned only $1.8 million in the quarter ended Dec. 31, or 3 cents a share, on $63.3 million sales. This compares with $3.2 million, or 4 cents a share, on revenue of $68.1 million a year ago. Excluding a penny-a-share income tax charge, the telecommunications-equipment maker beat the 3-cent estimates sought by two analysts, and revenue just barely missed the $64.7 million estimate. That gap will likely widen in the next quarter, however, with sales pegged at $56 million to $58 million -- at least $7.8 million below expectations. Shares were losing 31 cents, or 10.5%, to $2.63.

F5 Networks ( FFIV) was falling after the Internet-software company's growing profits failed to meet expectations. The Seattle-based firm said it earned $22.4 million, or 53 cents a share, which compares with $15.2 million, or 37 cents a share, in the year-earlier period. Revenue, at $120 million, clawed past the $118.2 million consensus, but profits fell 7 cents below the mean. Shares were down $4.96, or 6.7%, to $69.52.