This is where it is very useful to have a non-trading alt. It may be an alt that crafts and sends items to your posting alts or a character that is for raiding. Eitherway, once you have posted your items you can log onto this character and make a number of observations, such as:
- which of your competitors come on after your posting rotations - these are the competitors watching you
- which of your competitors post without you noticing - these are the competitors posting from the mobile auction house
- which of your competitors come on after your other competitors have done their rotations - there are the competitors watching your other competitors!