Lost in all the hype over BAIDU (NASD: BIDU), and its redolence to the days of yore was another interesting piece of nostalgia: The return of traders bidding up the acquirer on merger news. Typically, on mergers, the acquiree's stock goes up (to near the buyout price) and the acquirer goes down, reflecting the transfer of wealth between shareholders, as well as an acknowledgment of the risks associated with bringng another company into the fold. There's something naturally illogical about both stocks rising upon merger news, as it's tantamount to value being created out of thin air. But that's exactly what happened today with both E*trade (NYSE: ET) and Quest Diagnostics (NYSE: DGX). Cisco (NASD: CSCO) was up in the morning on rumors that they were going to buy out Nokia (NYSE: NOK), but it's just rumor at this point, and the stock fizzled on this down market-day. Just another red-flag and warning-sign that Cramer might not tell you about.