Q4 revenues were $1.5 billion, a 39 percent increase from $1.078 billion for the same period of 2004. This impressive growth was not enough to satisfy some analysts' very high expectations, although revenues were in line with consensus expectations. The stock took a hit but recovered in after-hours trading.
Here's the earnings call and related info. PaidContent offers a nice summary of the call. And here's a bit more commentary from the Internet Stock Blog.