Some updates on old SEM names we're finally losing due to past acquisitions.
First, i-FRONTIER is to be no longer, as least as a brand name. It's being fully integrated into into sister agency Avenue A/Razorfish (which itself needs a much better name!). Some more details from ClickZ: i-FRONTIER Brought Under Avenue A/Razorfish.
Meanwhile, Rawhide -- acquired by eXact Advertising last September, now has been absorbed completely into the company, though it will be known as eXactSearch. More details in the company press release.
FYI, I've added an updated my chart on various search marketing firm acquisitions. You'll find it here: Will 2005 Bring More SEM Acquisitions?