Great Firefox IP/anti-spam tool

Well, I’m calling this an anti-spam tool because that’s what it’s helping me do. It’s the Show IP Firefox extension, and it causes the IP of sites to show in your browser toolbar. But what’s really cool is the menu you get when you click the IP address in the toolbar. Right and left clicking bring up two separate sets of tools. With them, you can:

• Instantly report the site to Netcraft for monitoring
• Do DNS, IP and domain lookups
• Copy the IP address to your clipboard so you can input it wherever you want for research

Of course you can do all this without the plugin, but it’s just so much easier with.