What happened to satoshidice? Why do no people bet there anymore?
1. they do, just not very much
2. the house edge is almost twice that of any other dice site (1.9% vs 1%)
3. the maximum bet sizes have dropped off significantly
4. the range of bets available has been cut
5. the site hasn't kept up with innovations in dicing:
5a. betting is on-chain and slow
5b. bet verification involves waiting until the end of the day for the secret to be revealed
5c. other sites allow you to specify your own odds; sd still has a very limited list of odds
5d. other sites allow you to bet 'high' or 'low'. sd still only lets you bet 'low'
5e. there's no on-site chat, so there's less of a feeling of community around the site
It's hard to say which of these are most significant, but they probably all play a part. It seems like the site was just left to die, even before it was sold for a huge number of BTC.