Analyst upgrades:

• Keefe Bruyette upgraded shares of Colonial Bancgroup (NYSE: CNB) to Outperform from Market Perform on valuation following the recent weakness and believes the company will be eligible to receive TARP funds. Morgan Stanley believes the company's valuation adequately reflects risk to the loan portfolio; the firm raised shares to Equal Weight from Underweight.
• Merrill upgraded Ericsson (NASDAQ: ERIC) and ASML Holding (NASDAQ: ASML) to Buy from Underperform and believes their valuation reflects the worst-case for bad news.
• Oppenheimer upgraded Trimble Navigation to Outperform from Perform on valuation as they believe the company's long-term growth story is intact.
• Celestica (NYSE: CLS) was upgraded to Sector Outperformer from Sector Performer at CIBC.
• KeyCorp (NYSE: KEY) was added to Goldman's Conviction Buy List.
• Wachovia raised EastGroup Properties (NYSE: EGP) to Outperform from Market Perform.

• UBS cut Barclays (NYSE: BCS) to Neutral from Buy as they believe capital raises could negatively impact earnings and that the dividend is likely to be cut.
• JP Morgan downgraded Discovery Holdings (NASDAQ: DISCA) to Underweight from Neutral based on valuation and the deteriorating economic outlook.
• Friedman Billings downgraded shares of Janus Capital (NYSE: JNS) to Underperform from Market Perform and lowered its target to $7 from $23 as they see further risk to the downside following the company's weaker-than-expected results.
• LKQ Corp (NASDAQ: LKQX) was cut to Sector Perform from Outperform at RBC Capital.
• Affymetrix (NASDAQ: AFFX) was lowered to Sell from Hold at Deutsche Bank.
• RightNow Tech (NASDAQ: RNOW) was downgraded at Baird to Neutral from Outperform.

Started in 2001, Wikipedia has grown into a massive knowledge base, with more than 75,000 contributors and nine million articles.

No doubt Wikipedia is a great resource to learn about the bigger companies – such as Starbucks Corporation (Nasdaq: SBUX), Google Inc. (Nasdaq: GOOG), and Microsoft Corporation (Nasdaq: MSFT). But there are also many smaller businesses on the site.

So, should you jump in too?

"Wikipedia is one of the most frequented databases on the Web," said Dan Nichols, director of marketing communications at RightNow Technologies (Nasdaq: RNOW). "We posted an entry on RightNow to make sure we were accurately represented on the site and to increase awareness."

Keep in mind that a Wikipedia page can help improve your website's search engine rank – and perhaps drive some traffic. What's more, a Wikipedia page can lend some credibility to your business.

However, you need to consider some things: