Nothing crazy indeed but I believe Shuffle.com are expecting to read in-depth reviews from the members who received the $5 bonus.
Sharing your experience on the casino here will be more beneficial for them and for all those who are following this thread.
Anyway, congrats on the $5 and I hope your experience was great with shuffle.com!
Bonus is hook from casino to gain new users. It is like altcoin projects to run airdrops to attract new investors to their projects.
For bonus claimers from Shuffle.com company, it makes sense if they use the $5 bonus to play and return with their feedbacks for Shuffle about games, experience and what they satisfy, what they feel the Shuffle team need to improve.
Their contributions are appreciated because if the casino can become better, it will have more users, more income, more profit and will be able to distribute their profit as bonus to users again.