How'd you get 7 screens?
And also, whats that facebook application called?
And since I'm new to all of this, how are you guys taking these screenshots of your Droid homepage?
The number of screens you have is Dependant on the launcher/home that you are using. The Helix Launcher is free and on the market and it allows you to have up to 7 screens. You can also put your most used apps in the launcher bar so that they are available no matter what screen you are on. I highly recomend Helix 1.
The Facebook app is the standard Facebook with the NexTheme applied to it. The OP is rooted (see Hacking Forum) and running a custom ROM with customized NexTheme applied.
For Screenshots I used a tool called DDMS, found in the Android Software Developers Kit, to get mine.
Others use apps from the market like "DropCap". You have to be rooted (see hacking forum) to use those apps i think.