NEW YORK (

TheStreet

) -- Popular searches on the Internet include Sarah Palin as the politician is reportedly threatening to sue the publisher and author of "The Rogue," a book about Palin and her family.

Sarah Palin

Palin's attorney has written a letter to Maya Mavjee, the publisher of Random House's Crown Publishing Group, advising that Palin may sue her, the company and "Rogue" author Joe McGinniss "for knowingly publishing false statements" in the book. Palin's attorney reportedly has access to an email in which McGinniss acknowledges that he has no proof of the allegations he makes against the Palin family in the book.

McGinniss moved next door to the Palins in Wasilla, Alaska, while he was doing research for the book.

Standard and Poor's

is another hot topic. The

Securities and Exchange Commission

is considering civil action against the

ratings agency

for its rating of a 2007 mortgage debt offering.

According to parent company

McGraw-Hill

(MHP)

, the agency is under investigation for a rating it issued just as the housing market began to collapse. The investment, Delphinus, was a package of collaterized debt obligations.

If the investigation leads to a case against S&P, it would reportedly be the first legal action against a ratings agency in connection with mortgage-backed securities.

BlackBerry Playbook is trending as retailers slash prices of the tablet in effort to boost lagging sales.

Best Buy

(BBY) - Get Report

,

Staples

(SPLS)

and

Office Depot

(ODP) - Get Report

are now selling the Playbook for $200, with Staples and Office Depot offering an additional $100 mail-in rebate, bringing the total price down to $100.

Research In Motion

(RIMM)

has said that the official price of the tablet has not changed, but these promotional prices are temporary attempts to drum up interest in the Playbook.

Critics of the Playbook say a large problem with the device is that some features are locked unless connected to a Blackberry phone. It could face added competition this week, as

Amazon

(AMZN) - Get Report

is expected to unveil its new Kindle tablet on Wednesday.

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 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.