[kazen44]

Also, AD is probably one of microsoft's best products.

It's actually rather stable, and can integrate with nearly everything.

[duelingjello]

Fun ancient fact from AD administration c. Win2k3:

AD can optionally replicate by sending email (SMTP) between sites.

[kazen44]

as far as i know this is still supported.

i know this option has existed till atleast 2008.