Have we evolved a "house rule" on how we deal with quotes?

From time to time it is interesting to pick up information from other sites. I've tried it various ways:

(i) A pure link - This is fine but some people don't want to follow them (or like many of us, don't have much time) so lose the point. It also means that over time, the link may not work and the information is lost.

(ii) A (short) quote in ""'s (inverted commas, quote marks or whatever) followed by a link which
a) acknowledges the quote and
b) allows those who want to know more to find out for themselves

I wonder if any of our lawyers (or legally minded contributors) are aware of the copyright issues involved.

Any views?