The Social Network The Social Network

The Social Network kept adding friends as it topped the box office for a second straight weekend, earning $15.5 million, according to Box Office Mojo.

The film about the founding of Facebook now has a two-week total of $46 million, based on studio estimates Sunday.

The Katherine Heigl-Josh Duhamel romantic comedy Life as We Know It brought in $14.6 million, while Secretariat, a film about the legendary Triple Crown-winning horse, managed to race only to third place with $12.6 million. It was the first weekend for both movies.

Legend of the Guardians: The Owls of Ga'Hoole finished fourth; its $7 million haul brought its three-week total to $39.4 million. Fifth: My Soul to Take took in $6.9 million in its debut weekend.

Rounding out the top 10: The Town, (No. 6, $6.4 million); Wall Street: Money Never Sleeps, (No. 7, $4.6 million); Easy A (No. 8, $4.2 million); Case 39 (No. 9, $2.6 million); and You Again (No. 10, $2.4 million).