What Isn't a Mark of the Beast?

I know that Revelation is basically a Rorschach test, but isn't there anything safe from the "mark of the beast" tag? Apparently not (via DPftCW):

'Use of a numbering system for their premises and/or electronic numbering system for their animals constitutes some form of a 'mark of the beast' and/or represents an infringement of their 'dominion over cattle and all living things' in violation of their fundamental religious beliefs,' according to the farmers' lawsuit filed Monday in U.S. District Court for the District of Columbia.

Now, the federal livestock registration idea might not be so hot, for a host of legitimate reasons (some of Ed's commenters make that argument), but c'mon! At this rate, it's just watering down the brand. What about the Wal-Mart "Roll Back" guy - isn't he a mark of the beast? Surely!