Here's why I think there's been a lack of S.DICE buying pressure:

 A) The general belief that SatoshiDice betting volume in BTC is inversely correlated with the BTC/USD exchange rate. New S.DICE bids became very rare indeed when the BTC/USD price started soaring over $20.

 B) Fear that SatoshiDice will be shut down by some authority and without any warning.
 
 C) A lack of news or updates is allowing fear to be the dominant factor guiding trading decisions.


The outlook is bright, however. There's strong evidence that betting volume has remained constant when whale action is factored out (many thanks to organofcorti and dooglus for this analysis). Evoorhees is presently working on removing any question about SatoshiDice's legal status, and in the meantime is laying low. When the legal issues are put to rest and evoorhees starts promoting the business again, I think we can expect a big swing in sentiment from negative to positive, and thus a higher and more stable share price.