NEW YORK (

TheStreet

) -- Popular searches on the Internet Tuesday include Blackberry PlayBook as

Research In Motion

(RIMM)

announced the launch of its BlackBerry PlayBook OS 2.0.

The upgraded operating system features built-in email with inbox, calendar and contacts applications. Many had been looking for email capabilities in the first operating system -- which was set up so that a BlackBerry smartphone had to be connected to the PlayBook tablet in order for the user to access email. RIM also added social integration capablities for Facebook, Twitter and LinkedIn to the system's calendar and contact applications.

The new operating system is available now and free to download.

Dollar Thrifty

(DTG)

is a hot topic after it reported fourth-quarter profit that nearly tripled on strong demand for used cars.

The company reported earnings of $33.9 million or $1.08 a share, for the quarter ended Dec. 31, higher than the $12.5 million, or 41 cents, it reported in the same quarter a year ago. Vehicle rental revenue rose to $338.3 million, and the length of time vehicles were rented climbed as well by 5.2%.

Dollar Thrifty said it expects the U.S. travel market will improve this year and projects vehicle rental revenue to rise 3% to 5%. Those expectations lend themselves to its projection that first-quarter profit will be in the range of $1.15 and $1.40 a share and full-year profit will come in at $4.60 to $5.20 a share.

Medtronic

(MDT) - Get Report

is trending after reporting fiscal third-quarter profit that rose 1.2% on demand for pacemakers.

Medtronic reported net earnings of $935 million, or 88 cents a share, in its fiscal third quarter ended Jan. 27, slightly higher than the $924 million, or 86 cents, it reported in the same period a year ago. Adjusted earnings of 84 cents, excluding items, were in line with estimates.

Heart-rhythm and spinal devices remain the company's two key markets, while revenue from implantable cardioverter defibrillators fell due to fewer procedures.

The company reiterated its revenue outlook and tightened its fiscal year 2012 earnings per share guidance range. Medtronic now expects fiscal year 2012 earnings per share in the range of $3.44 to $3.47, including dilution from its acquisition of Ardian.

Brittany joined TheStreet.com 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.