>Take on camera
>Copy RAW images to external HD (£60 for 250gb, portable)
>Edit and export to JPEG
>Store JPEG in lightroom
>Back up RAW on older machine
Main computer of use is a laptop, so HD space is limited.
Also, if using a Mac, would use flickr for ability to export straight from iPhoto if that's your choice.
You could also purchase some very cheap web space and FTP files to password protected area every, say, week or month