[Reggie Fowler]

I just downloaded some widgets. Where and what folder should i drag them to?

[TETENAL]

If you download them with Safari, Safari automatically places them in ~/Library/Widgets.

[OptimusG4]

If you have multiple users and want to share them all: /Library/Widgets
If you're the only user, they can go into ~/Library/Widgets, or the main Library folder as well, you're call.

[fobside]

Double click them. They install automatically.

[Busemann]

Double click them and they'll install themselves. To remove them, just delete them from ~/Library/Widgets