[pants2]

Not good enough, scammers will make copycat look-alike addresses that have the same first ~7 and last ~7 characters.

[johnisgood]

What does this mean in practice though? If you need to be certain, make sure you copy the right address.

[johtso]

What about something like VisualHostKey but for the bitcoin address?

[johnisgood]

I doubt that would help much. People should clear their clipboard, and copy & paste, then double check the whole thing, or at least the first and last few characters.