The BP oil spill was among the top searches in 2010, according to Yahoo and AOL.

The tragic BP oil spill was on the minds of Yahoo and AOL search users this year.

According to Yahoo, which released its Year In Review blog post today, more users searched for information about the BP oil spill than any other topic in 2010. It was followed by searches for the World Cup, Miley Cyrus, Kim Kardashian, and Lady Gaga, respectively. Apple's iPhone took the sixth spot in Yahoo's list of the top searches, while Megan Fox, Justin Bieber, American Idol, and Britney Spears rounded out the top 10.

When it came to queries through Yahoo's mobile search, the list was much different. According to the company, the NFL was the most popular mobile query this year, followed by Lady Gaga, Rihanna, Sandra Bullock, and the NBA. The BP oil spill fell to 10th place in the company's mobile-search list.

The World Cup was the most searched-for sporting event on Yahoo this year, while more people asked "how to tie a tie" than any other question in 2010. Apple's iPhone 4 topped the list of "obsessions" this year, beating out Lindsay Lohan and the iPad. When it came to the financial world, unemployment was the top search query in that sector, Yahoo reported.

AOL's list of the top searches in 2010, which it announced yesterday, is a bit different.

Although the company didn't say which queries bested them all, it revealed that Tiger Woods attracted the most searches among celebrities during the year. Apple's iPad was the "top shopping" query in 2010. New York City's trouble with bedbugs caused that query to top all health-related searches. The BP oil spill was the most popular news query of the year, beating out unemployment and the earthquake in Haiti.

Microsoft yesterday released its own list of top searches for 2010 on Bing. According to the company, its most popular search was for Kim Kardashian. She was followed by Sandra Bullock, Tiger Woods, Lady Gaga, and Barack Obama, respectively. Perhaps a sign of the state of the economy, the 10th most-popular Bing query this year was "free."

Google has yet to release its list of the top search queries in 2010. A company representative told CNET in a statement yesterday that the search giant plans to release its list later this month to ensure it includes as much 2010 data as possible.