Thanks for giving the directory path - I have wanted to do something about this app for some time and could find almost no information on it.
My system (OS 10.4.11) launches BOMArchivehelper.app as the default for various compressed files (.zip, .rar, etc.), and for this purpose it seems nearly, if not completely, useless. Instead I launch Stuffit (or right-click, "open with") and either open compressed files or drag and drop. Once in a while I forget and double click a file's Finder icon, and almost always regret it. Did this about two hours ago for a ~ 75 MB zip file and the little sourcer's apprentice is still grinding away with the progress bar moving about about 1 mm every 20 minutes. There is no program icon in the dock and if I call up the Force Quit Applications panel, the utility is no where to be seen.* I'm torn between ignoring the useless little troll of a program and shutting everything down, so I can reboot and get it out of my sight.
I finally reset the default for zip files to Stuffit, so it shouldn't happen again, but I'd like to know if there ius a real use for BOM, or is it just there because Apple felt obligated to include thi type of app in the operating system?