[from Star Trek Classic's “Beam me up, Scotty!”]
1. To transfer softcopy of a file electronically; most often in combining forms such as beam me a copy or beam that over to his site.
2. Palm Pilot users very commonly use this term for the act of exchanging bits via the infrared links on their machines (this term seems to have originated with the ill-fated Newton Message Pad). Compare blast, snarf, BLT.