I just noticed 3 more topics which seems great in gambling section.
Here is the first one: #1 RATINGS of BITCOIN SPORTSBOOKS : poster book discussion
The OP of this thread has rated many well known sports betting website, also included few more details in it.

This is the second one: List of truly instant and anonymous bitcoin casinos
The OP of this topic has rated some crypto gambling sites in different categories. This is an old topic and the OP isn't active in the forum. As a result the information of this thread is backdated, but the OP had shown some great effort when he created the topic for gamblers.

This is the third one: All Bitcoin Lottery websites
I haven't noticed this topic before, there isn't much discussion in that topic. As a result, it has rarely pop-up in the Gambling discussion. However, notblox1 has created a good list of bitcoin lottery website.