I'm glad that you actually took your time for this post. I will look into these thing that you mentioned and see if there's something I may improve.. like the multiplier or the bet limits and so on.
I really like to get some feedback, both positive and negative. Because the site is still in development, I had many ideas for this in the beginning but you need to start somewhere and implement these features in the progress.
I will try to answer all your questions about the card randomisation and the multiplier calculation (without revealing too much of the code.. for obvious reasons). It may be a good idea to post that information at the site too, you're right that it's really little described about this process.
But not right now at this late hour.
So your assertion is still that your site has a 1% house edge, despite those two real-btc hands that I posted?
If I bet .0001, and the house edge is 1%, I should get back, on average, .000099. In the first example I posted above, I'm getting back .0000696142. Wouldn't you say that that means that the house edge, on that bet, is 30.39%?