Over the past year Google has weathered a recession, and the loss of former sales boss Tim Armstrong, who is now the CEO of AOL.

In case you trade stock here’s a special note. Merriman Curhan Ford analyst Richard Fetyko, initiated coverage of Google (goog) with a SELL rating on November 21, 2008 when the stock was trading at $260, just days before the stock’s 52-week low. Since then, shares have more than doubled. Fetyko did upgrade the stock to "neutral" when it reached $328 and a "buy" when the stock price reached $342.

If the DoubleClick Ad Exchange boosts profits as Google hopes, the stock could reach new highs over the next 2 years.

Google has just launched their DoubleClick Ad Exchange which brings together all types of display ad buyers and sellers, as well as AdWords, and delivers those ads to AdSense publisher web sites.

Through the new DoubleClick Ad Exchange big-time and small-time advertisers can now buy targeted display ads on thousands of DoubleClick ad-serving websites, which could boost Google’s revenue, and hurt Yahoo in the display adverting market.

Traditionally, publishers and advertisers using Google’s AdSense and AdWords products would have to manually plan their display ad campaigns. Now, publishers can tap into Google’s ecosystem for ads where prices are set in a real-time auction and advertisers can access a large pool of inventory within one platform.

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