cowbow mac the quote from the lyceaum was from someone who purchased a industrial grade 44 gallon drum and drank it continously over many months. naturally i have many problems with such an 'experiment'.
the article also gives no reasons for toxicity other than a similar chemical structure to anti-freeze (which can have no bearing on toxicity.)
The lyceaum link was an example of an anecdotal experience which holds true for many users of 1,4b. If you think that everyone is being sold AR grade 1,4b you are probably in for a suprise as AR grade chemicals are much more expensive than an industrial grade - this is what I can only assume is the more common on the street by logic. phase_dancer provided some good links, and anyone who has had GHB compared to 1,4b will give similar anecdotal reports that prolonged use of 1,4b will give more worrying side effects than those produced from GHB use.