Forum Moderators: martinibuster
What you are refering to there is known as reciprocal linking (you scratch my back and ill scratch yours kinda deal). This is an acceptable and standard practice.
I believe crossing linking is where you have many similar websites and link them all with each other (also know as interlinking).
This is stepping into a grey area and can risk a penaly from Google if done to excess.
If im wrong on this one, im sure someone else will correct me! ;)
JOAT