I use WikiPedia, Dictionary, Capture, the default Weather one and one called TailDash that allows you to watch log files.

There's an option in Safari, to "Automatically Open Safe Files," if that's turned on and you download a Widget, it automatically installs, as I'm sure you know.

Unfortunatly, in theory, that can also download and install a Widget that is, well, less than ideal.

Since I'm a lazy bastard and didn't want to disable that feature, I downloaded a background widget that watches for when a widget is automatically downloaded/opened, and says "Do you want to install this widget?" that way you have no worries of some random site dumping a widget at you without you knowing it. Of course, if that did happen, you could just delete the widget, but still.

I highly, highly recommend it. It's nice because when you download a widget after the "protection widget" is installed, it'll just ask you "Hey, you've downloaded a widget that is trying to install, do you want to let it? Yes, No, and if no, you can choose to delete it" Pretty neat.

Get it from here: http://macupdate.com/info.php/id/18039

Read the readme to see how to test it to make sure it's working.

Again, you can always just go into your Safari Preferences and DISABLE "automatically opening safe files," and then from that point forward you'd just have to unzip and double click on the widget you downloaded for it to install -- but if you're lazy like me and want the automation of widget installs, with the safety and security of knowing you won't have some random site dump an evil widget your way, this is a must.