Offers coming from a gambling site seems to be interesting for me as always because it is one of the criteria or factor I check on exploring and choosing a gambling site I would play with. But before getting amaze on such offers, I do always check first the legality of the site because good offers for me seems to be traumatic or might be suspicious that they might tend to caught players but they have a hidden agenda out of it so I do always check up for background information before getting amaze from offers.
For me a great offer that would satisfy or would caught my attention to play is the welcome bonus of course which can be monetary or a big discount for game plays because that was already a big thing to me. But still legality check first for me before the offers.
We should invest only in real sites like so many of them nowadays give fake offers, according to me on sites are better than new and undeveloped websites as they run only to get profit not to attach investors. I belives in safety and that comes from well known and well development sites as all those offers I already have been taken from old sites so old sites are more safe and we will not worry about its legality.
This is the reason why many new sites are offering tempting rewards and bonuses to attract gamblers and that is one way of competing with old and reputable casino sites. But as a player, you should check the underlying requirements before jumping on their offer, as most of them have unreasonable requirements before you can avail such bonuses.