Scouting is a means of gaining information instead of or in conjunction with Lookamancers.
A scouting unit is generally posessed of a high Move, is cheap (and therefore expendable), or, ideally, both.
To be of use, a scouting unit must have a means of conveying the information it gathers to its superiors.
Some methods used:
Thinkamancer Thinkagram, as offered by Charlie's archons Magic Hats Vinny Doombats can see directly through the eyes of any Doombat. It is unclear whether this ability is unique to him, or if some or all Transylvito Vampires can do this.
Barring all of these, messages can be hand delivered by troops with the Move available to reach their Commander