Android - How do I copy text from my PC to my phone?

You can install the WiFi Keyboard app from Android Market. A good app, supports both USB and WiFi input. You need to follow information carefully, to get work around.

Chrome-to-Phone

Google DocsDrive allows collaborative editing between phone app and webapp. Updates typically propogate from one to the other within a few seconds, and just appear in the document on the updated device, with markup to show that it came from someone else.

I use it for brainstorming sessions with my colleagues on the go, I like it better than SMS/Email because it's easier to see what they're talking about (their text appears in the pertinent part of the document)