No, it isn't pointless. By virtue of the fact that the average lifetime of a $100 bill in circulation is 5 years, seeing older $100s will be less common after 5-10 years. When older bills are used, they'll raise suspicion, thereby reducing a counterfeit note's utility.

NTFS's default cluster size for volumes up to 16TB is 4KB anyway. Anyone with a new computer (Vista+, anyone who wouldn't know what a file system is, have reason to choose another one and not know how to manually align it) will be using 4KB clusters.

Comcast has been using twitter for a while now, under the @ComcastCares account. Multiple Comcast employees monitor twitter streams for complaints and are empowered to take action to resolve issues. ComcastBonnie (as well as a few others) are authorized (cs? pr?) representatives for Comcast. Given that her twitter page says the same thing as her post, you can probably take it at face value.

Yes, but it's often many days out of sync with the official releases. In more bureaucratic organizations you're not going to get some random 3rd party build of an application that handles as much sensitive data as a web browser approved. Mozilla needs to realize that wider corporate adoption requires easy manageability. MSI + Group Policy Template FROM MOZILLA would be huge.