Sergey Brin claims that Google (NASDAQ: GOOG) didn't try to buy Twitter. The co-founder of the search engine giant made a surprise appearance at Web 2.0 Thursday, where organizer John Battelle asked point blank if he'd made a move for the popular microblogging website.
Of course, Brin revealed his fluency in corporate speak, continuing, "But if companies approach us we definitely consider any opportunities to buy," according to Reuters. A denial doesn't always mean a denial, especially if there were agreements to keep negotiations confidential.

Heading into the week's end, we find that the ground under Wall Street has shifted a little. For at least one week this year, investors have looked at the glass as half full, lending some support to a story I posted earlier in the week: 

