gmap macro doesn´t parse.. why? I have in my contact form something like 

[gmap markers=big red::40.26041912699509,-3.8385844230651855 |zoom=15 |center=40.26217119406393,-3.840494155883789 |width=300px |height=200px |control=Small |type=Map] 

but it doesn´t parse when I put it into the body of a content type
You need to create an input filter that uses the GMAP filter before it can work : Go to Administer > Site Configuration > Input format > Add Input Format and select the gmap filter in the filters list