If you save pages as jpegs, you can drop them on to any number of photobucket, flickr etc sites that have very good visibility and security.

I'm using really old tech PCs now for the same reasons you state.

The 'trick' / hack that got me to change my ways was a 'fan' hack. All my PCs fans were turned off, and serious 'thinking' undertaken by my machine ended up in a melt down.

The guys who rescued all the data from my damaged discs, who incidentally didn't want my business again, hooked up my old Pentium (LOL) so that all fans are powered off a separate power source. The only fan references are red LEDs and a small capacitor that holds a charge so I can see the fans (which were originally switched by the main board)have been turned off. Have had one hit so far.

You cant stop people looking at your machine on line, or anything you type.