Here are some highlights from this past week's earnings coverage from BloggingStocks:

• Activision Inc. (NASDAQ: ATVI) posted stellar results on the popularity of Guitar Hero and Transformers.
• Airgas Inc. (NYSE: ARG) beat Q4 estimtates with record earnings and raised its guidance.
• Amkor Technology Inc. (NASDAQ: AMKR) beat Q1 expectations on strong demand for wireless.
• Anadarko Petroleum Corp. (NYSE: APC) reported strong Q1 results that beat Wall Street estimates.
• Barnes Group Inc. (NYSE: B) beat Q1 expectations on its "global reach" and raised its 2008 guidance.
• Coinstar Inc. (NASDAQ: CSTR) beat Q1 expectations and raised its full-year guidance.
• DirecTV Group Inc. (NASDAQ: DTV) posted better-than-expected results and announced share buybacks.
• Double-Take Software (NASDAQ: DBTK) beat Q1 expectations and raised its Q2 and 2008 guidance.
• Goldcorp Inc. (NYSE: GG) profits surged in the first quarter on record high gold prices.
• ICON plc (NASDAQ: ICLR) beat Q1 expectations and raised its full-year guidance.
• Marvel Entertainment Inc. (NYSE: MVL) easily beat Q1 estimates and raised its full-year guidance.
• Molson Coors Brewing Co. (NYSE: TAP) reported a surge in Q1 profits that beat Wall Street estimates.
• Panera Bread Co. (NASDAQ: PNRA) beat Q1 expectations and lifted its Q2 and 2008 forecasts.
• Symantec Corp. (NASDAQ: SYMC) beat Q4 expectations and raised its Q1 outlook.
• Transocean Inc. (NYSE: RIG) Q1 profits more than doubled due to soaring oil prices.
• Unilever (NYSE: UL) posted strong results, with revenues beating estimates for the first time in six years.
• UTStarcom Inc. (NASDAQ: UTSI) released a preliminary guidance well above expectations.
• Walt Disney Co. (NYSE: DIS) posted better-than-expected results on success of its theme parks.

Coinstar (NASDAQ: CSTR) offers North American and U.K. retailers a range of storefront service and entertainment devices. These include coin counters, kiddie rides, bulk vending machines, skill-crane games and point-of-sale terminals. The firm also provides self-service DVD movie rental/purchase kiosks and provides money transfer services, prepaid wireless products, stored value cards, payroll cards and prepaid debit cards. Coinstar products and services are distributed through more than 53,000 retail stores. Corporate clients include Wal-Mart (NYSE: WMT), Kroger (NYSE: KR) and Walgreen (NYSE: WAG).

The company surprised the Street last week, when it reported Q1 EPS of 18 cents and revenues of $190.5 million. Analysts had been expecting four cents and $182.7 million. Management also guided Q2 EPS to 8-15 cents (12 cent consensus), Q2 revenues to $200-$210 million ($202.19M consensus), FY08 EPS to 60-75 cents (57 cent consensus) and FY08 revenues to $850-$900 million ($829.83M consensus). DA Davidson subsequently upgraded the stock to "buy".

MOST NOTEWORTHY: United Rentals, Inc (URI), Nintendo Co (NTDOY), Shuffle Master, Inc (SHFL), CheckFree Corp (CKFR) and The Kroger Co (KR) were some of today's noteworthy downgrades:

• JP Morgan cut United Rentals Inc (NYSE: URI) to Underweight from Neutral believing the company's strategic alternatives and valuation upside are limited given slowing end markets and lack of sources to unlock value.

• Citigroup downgraded Nintendo Ltd (OTC: NTDOY) to Hold from Buy.

• Prudential downgraded Shuffle Master Inc (NASDAQ: SHFL) to Neutral from Outperform following a field trip to Macau, as they are incrementally more negative given competition in electronic table games and continued market share erosion in slots.

• JMP Securities cut CheckFree Corp (NASDAQ: CKFR) to Market Outperform from Strong buy and has a greater degree of certainty that Bank of America (BAC) is planning on moving its payment warehouse portion of online bill pay in-house over an unspecified period. The firm believes earnings can be impacted by 25c-30c annually.

• HSBC downgraded shares of The Kroger Co (NYSE: KR) to Neutral from Overweight.

OTHER DOWNGRADES:

• ThinkEquity downgraded KLA-Tencor Corp (NASDAQ: KLAC) to Accumulate from Buy.

• Cowen downgraded Salesforce.com, Inc (NYSE: CRM) to Neutral from Outperform and removed the company from its Focus List citing reduced visibility, lack of near-term catalysts and potential increased competition from Oracle Corp (ORCL) and Microsoft (MSFT).

• JP Morgan cut Dr. Reddy's Laboratories Ltd (NYSE: RDY) to Underweight from Overweight to reflect the increased risk of changing market conditions in Germany.

• Matrix USA downgraded Coinstar, Inc (NASDAQ: CSTR) to Sell from Hold on valuation.

• Piper Jaffray cut Cognizant Technology Solutions Corp (NASDAQ: CTSH) to Market Perform from Outperform.

• JMP Securities downgraded Dendreon Corp (NASDAQ: DNDN) to Market Outperform from Strong Buy.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

I'm a big fan of Peter Lynch's methods for finding exciting growth stocks before other people do. His strategy: Go to the mall, talk to your kids, and learn about the businesses. There will be plenty of time for spreadsheets and discounted cash flow when you get back to the office. In her column Three Places to Spot Investment Ideas, TheStreet.com contributor Jennifer Openshaw advises readers: Take it to the streets, take it on the road, and take it to expert customers.

Because the first book on investing I read was by Peter Lynch, my first stock pick came from my own personal experience. I worked as a cashier at a grocery store and noticed that many people were using the new Coinstar machine. An elderly lady explained to me that she'd been reluctant at first, but that the fee that Coinstar charged was not as valuable as the amount of time she could save with it. "Doing it myself instead of using Coinstar would be the equivalent of paying myself $1.50 an hour to roll change," she told me.

I talked to the Coinstar technician and then, with my savings from work that summer, took the plunge. I bought a hundred shares of Coinstar (NASDAQ: CSTR), and earned a solid return on it.

Reading Openshaw's column got me to thinking: There are some pretty weird places to find investing ideas. So I'm asking our readers to leave a comment answering this question: What is the craziest place that you ever found an idea for a stock? The person who contributes the strangest story will win the satisfaction of knowing that he or she had the strangest story.