Yeah, granted, but I'm glad that we seem to be separating the hype from the facts. There does appear to be some question as to whether flax oil might work as well as dha oil during pregnancy (at least if you're a rat -
http://www.ncbi.nlm.nih.gov/pubmed/20817424) in terms of raising fetal dha and epa levels but the weight of evidence is on the side of taking dha if you're pregnant or breastfeeding.
I'm no longer convinced that it's necessary after that though if you're getting enough ALA (and not too much LA).