Have to mention... Longchen is the professional dream
interpreter in this forum
(i'm
serious)
About dream interpretation, IMHO it have its values, but it's
better not to talk about dream interpretation in
Buddhism in general. As a general guideline I would not encourage
people to do dream interpretations unless they have clear guidance
from an enlightened master who clearly knows how dream
interpretation is going to be used in a way that does not confuse
the practitioner further but benefits him on his spiritual path. If
there are certain Vajrayana sects teaching dream interpretation as
part of their practices, or it is part of certain tantras, then it
is best kept within the Vajrayana sects and traditions, as these
practices usually require instructions and teachings or initiations
from the rinpoches/teachers, we can't just anyhow do it... and
those dreams are interpreted for very specific purposes, I believe,
they are not just meant for mundane purposes.
Also as path_seeker pointed if you are not skilled in this, then
you may interprete things wrongly... which might just make things
worse. Without right knowledge, dream interpretation might just be
a distraction on one's path. If one has received instructions to do
dream interpretations (I'm not sure if anyone has) then it's better
to keep this practice to oneself and try not to confuse
others.
The Buddha was against dream interpretation generally for many
obvious reasons.. even though in the sutras he did dream
interpretation for at least one occasions or more (one of which was
interpretating Ananda's dreams).
Other than that, the general statement made by Buddha on dream
interpretation is that Dream Interpretations are 'lowly arts' and
'wrong livelihood' (which is against the 8 fold path):
"Whereas some priests and contemplatives, living off food given
in faith, maintain themselves by wrong livelihood,
by such lowly arts as: reading marks on the limbs
[e.g., palmistry]; reading omens and signs; interpreting celestial
events [falling stars, comets]; interpreting
dreams; reading marks on the body [e.g., phrenology];
reading marks on cloth gnawed by mice; offering fire oblations,
oblations from a ladle, oblations of husks, rice powder, rice
grains, ghee, and oil; offering oblations from the mouth; offering
blood-sacrifices; making predictions based on the fingertips;
geomancy; laying demons in a cemetery; placing spells on spirits;
reciting house-protection charms; snake charming, poison-lore,
scorpion-lore, rat-lore, bird-lore, crow-lore; fortune-telling
based on visions; giving protective charms; interpreting the calls
of birds and animals he abstains from wrong livelihood,
from lowly arts such as these.
~ http://www.accesstoinsight.org/tipitaka/dn/dn.02.0.than.html
Also not to take dreams too seriously:
If you want to continue to be a devoted yogi, generally you
should never cling to dreams. If you do, you will eventually expose
yourself to the influence of the four maras. If your dreams are
positive, do not have any expectations. If we are filled with hopes
and expectations, even positive things can turn negative. If your
dreams are negative, don't take them too seriously. Learn to see
negative dreams as illusion, not real. Then, although a dream seems
negative, because we realize that it isn't real, it becomes a
positive thing that prepares us for further development and
realization in the spiritual path. This is the practice of a
yogi.
-- from The Life of Gampopa by Jampa Mackenzie Stewart, just
published by Snow Lion Publications.