I believe it will be more efficient to make the top of the image clickable, rather than the bottom or to include the url in the topic title.

There was another recent thread for Jokerbet - here. How to know which is official?

The non-sticky bonus sounds tricky, how does the user know if they are gambling with their own money or with the bonus money?

And what if a user makes a deposit, then claims the bonus, and then withdrawal his money? Is that posible or we can withdrawal only after finish the bonus wagering?