NEW YORK ( TheStreet) -- Popular searches on the Internet Monday include Amanda Knox, as the American student convicted of murdering her roommate Meredith Kercher in Italy in 2007 made a final appeal to an Italian court for her freedom.

Knox spoke in fluent Italian in her appeal, maintaining she had nothing to do with the crime, as she has done since her arrest four years ago. While Knox was sentenced in 2009 to 26 years in prison, and her boyfriend Raffaele Sollecito sentenced to 25 years, the jury will now deliberate and decide whether those sentences will stand, be altered or dismissed altogether.

Prosecutors are seeking to increase her sentence to life in prison. A verdict is expected later Monday.

"iPhone 5" is trending as the latest version of the highly anticipated Apple ( AAPL) smartphone is expected to be unveiled Tuesday.

It has been more than a year since the release of the iPhone 4, and the newest version of the iPhone is expected to have a bunch of upgrades -- from the inclusion of Apple's latest iOS mobile software to the upcoming iCloud storage service to an improved camera.

Last week, Apple invited press to its headquarters on Oct. 4 to "talk iPhone." Tuesday's event is expected to be led by new chief Tim Cook, Steve Jobs' successor. It will be Apple's first major product unveiling that won't be led by Jobs.

Citigroup ( C) is another popular search. Regulators in Japan may penalize Citigroup after an investigation found the bank's Japanese retail banking unit may have failed to fully explain product risk to customers.

Penalties could include suspending operations temporarily at some locations, though Citigroup now may reportedly reshuffle management as well in an effort to strengthen its Japanese unit and assuage regulators.

This would mark the third time since 2004 that the unit would be penalized by Japanese regulators following money laundering charges in 2009 and 2004.

The chatter on Main Street (a.k.a. Google, Yahoo! and other search sites) is always of interest to investors on Wall Street. Thus, each day, TheStreet compiles the stories that are trending on the Web, and highlights the news that could make stocks move.

-- Written by Brittany Umar.
Brittany joined TV in November 2006 after completing a degree in Journalism and Media Studies at Rutgers College. Previously, Brittany interned at the local ABC affiliate in New York City WABC-TV 7 where she helped research and produce On Your Side, a popular consumer advocacy segment.