We’re fairly certain we haven’t heard the last of this Microsoft offer to buy Yahoo! — or Google’s plans to intervene — but it looks like round oneyahoo has Yahoo! saying “no thanks” to Microsoft’s $44.6 billion buyout offer. Apparently some of the number crunchers inside Yahoo! feel like the n umber is too low of a valuation, while others want to get tied up with Google to improve search revenues — which some seem to think might have some antitrust implications. Pah, “antitrust implications.” At least Microsoft remembers when men were men, and monopolies were monopolies.