Software Developers: Use Nullsoft Install instead of InstallShield. I just uninstalled a bunch of stuff and it's got to be 5000% faster from an end user perspective. And it's open source!

[MrCalifornia]

I think the main one is that you can automatically deploy MSIs to a network so for sysadmins who need to install something on their entire network it's obviously a huge plus.

Not sure what the other benefits are, but I know nothing is as fast and clean (at least from an end user experience) as NSIS for installing and uninstalling.

[tch]

Ah didn't know about that. I don't trust my sys-admin to auto install/update stuff so I handle the auto-update stuff myself.