There has been a lot of talking about the effects of different lipids lately in Finland at least. Some say the most important thing is the right balance (1:1) between Omega-6 and Omega-3 fatty acids and others state that we have only been dramatizing the effects of saturated fatty acids. Who should we believe when even the experts of nutrition can't find consensus on these cases? There is only one thing they totally agree on: trans fatty acids are dangerous for your health.
I have been trying to find neutral information about the effects, which ain't easy in the first place, and I think it's important to eat a little bit of everything. Humans are omnivores after all. Versatility is the key word and "everything in moderation" is actually very good advice for life in general because it applies in many different situations.