The company said it had more than 24 million unique visitors in September 2011, representing year-over-year growth of 103 percent.
This spending is expected to show 2.7 percent year-over-year growth for the quarter just ended, from a year earlier.
He said he did not expect year-over-year growth in revenue until this summer.
Tagged.com came in second in terms of year-over-year growth, rising 330 percent to 3.8 million users.
Cook also noted that year-over-year growth beat the industry average considerably.
That will make it tougher for the unit to show year-over-year growth.
"In February, international travel accounted for two-thirds of our year-over-year growth," he said.
By then, the market could see massive year-over-year growth once again, with plenty of love (and money) to go around.
The next four to six quarters will give you weaker year-over-year growth.
"We don't expect to see year-over-year growth until the second quarter of 2002."