The FTC's focus on 'small' acquisitions by tech companies is the first shot in a big new battle (GOOG, AAPL, MSFT, AMZN, FB)

· The Federal Trade Commission's move to probe past acquisitions by the big tech firms is one more regulatory worry for those companies.
· The agency plans to study the "hundreds" of deals the companies have made over the last 10 years that the companies hadn't previously had to report to it.
· There's growing concern inside...