Presidential Debate 2012 Reactions and Impressions: Twitter Responds to Romney's "Binder Full of Women," The Economy and More (Photos)

True to form, Twitter once again erupted in activity during the presidential debate last night between President Barack Obama and Republican challenger Mitt Romney. The town hall-style debate, which was held at Hofstra University in Hempstead, N.Y., brought in 7.2 million tweets, Twitter announced.

According to Twitter, the event's 7.2 million tweets beat out last week's vice presidential debate by over 3 million but were surpassed by the first presidential debate earlier this month (10 million tweets). The debate also bested the Republican National Convention (4 million tweets) but came up short compared to the Democratic National Convention (9.5 million tweets).

The Hofstra debate included a lively discussion on taxes, foreign policy, energy and environment, and immigration. Twitter reported that the economy was the "most-discussed" topic of the night, taking up 28 percent of tweets sent. It was followed by taxes (17 percent), foreign policy (16 percent), energy and the environment (13 percent), and immigration (8 percent).

The most Tweeted-about moments of the debate included: the audience question to Romney on immigration; Obama's "You're the last person to get tough on China"; and Romney's response to the tax rates question. Each moment brought in over 100,000 tweets per minute (TPM): 109,560 TPM, 108,619 TPM and 107,386 TPM respectively.

Similar to past debates, key words dominated the conversation on Twitter. According to Twitter, "binder" and "pension" were widely tweeted about, as well as "Jeremy" (the first audience member to ask the candidates a question).

Romney's comment on "binders full of women" sparked a series of memes and parody accounts, including @Romneysbinder. The parody account amassed over 6,500 followers in just 77 tweets by Wednesday morning. @Romneysbinder's first tweet alone, "Boy, I'm full of women! #debates," solicited over 4,400 retweets and more than 780 favorites.

Like the two past debates, the moderator- in this case CNN's Candy Crowley-became one of the highlights of conversation among tweeters. Crowley received mixed reactions from viewers, with some praising her ability to moderate the debate and others criticizing what they saw as bias towards Obama.

Only one more presidential debate remains before the November 6 election. The last debate will be held on October 22 at Lynn University in Boca Raton, Fla. and will be moderated by Bob Schieffer. The final debate will focus on foreign policy.