I don't think there is a level of success that is the baseline for any business no matter how successful they are, business success has no rank and any wise company that want to sustain its relevance in the market must be actively involved in loads of development,  marketing and promotion to be able to match up to competitors.
*It is unwise for a business to stop its marketing or promotion simply because of the current community base, any business that does that may become isolated in no time, since there is nothing more to attract new members to the casinos.

By running their signature campaign many years, I am sure that Roobet team got good results from the campaign. They are ready to reinvest their casino income and revenue for a signature campaign on Bitcointalk.

They even more seriously advertise Roobet on Bitcointalk by hosting some events with good reward prize pools for winners.

Roobet has good reputation not only from their advertisement here by signature campaign, hosting contests but they also gain it from their casino operations. By providing provably fair games, have smooth payouts for winners and good support for users with technical issues as well as mishandling problems. At the end, they handled accusations well by correcting initial mishandles to correct ones.

They gain good reputation by good activities many years.

They have been running the signature campaign successfully from over 3 years on the forum and have gained lot of exposure to the market with huge player base also from this which is why they are actively running promotional events on forum also.They have gained reputation in the market with their casino so they will be happy to distribute some back to community in form of these events and rewards.

I do not doubt it, for me Robbet has always been one of the casinos that have the most trust and reputation, so if you decide to play at Roobet you can forget that you will be scammed or that they will give you a hard time, all their processes are very transparent and that is what every player should see, that it is not just a façade of a casino that sounds and looks great but also shows that the best thing they have is also their players, this shows to the other casinos that they are the best best Roobet is there with them, also as they say, the promotions and contests they do are very different, and they have the participation of people who are not even players, but who have the opportunity of having a great diversity.

A signature campaign in our forum is a pretty good marketing option, since this forum is highly viewed, highly visited and highly valued, it doesn't surprise me that the results are always positive, I have always seen the cama'palñas of signatures like the best option to have a site in a privileged position, both traffic and preference, it is something that I imagine that always happens, I do not see any other, of course I say these things only speculating, perhaps each casino has its team where they evaluate everything regarding marketing, and its results, but I have always said that good marketing pays for itself over time.

Roobet crossed 3 billion bets already so the budget for the signature campaign is just pennies considering the size of their casino and for a brand to stay they always have to keep their name among their consumers even they are much familiar with the product and the best example for this is pepsi and coke, almost everyone in this world knows about the product but still they are advertising it cause its needed for the survival.

Marketing does really play a great role for a company or a certain product would really be last up almost a lifetime which its not surprising that these companies would really be continuing to have that exposure and spreading up awareness as much as they could considering that they are still making huge revenue then its true that this kind of expenses or spending would really be peanuts on week to week basis.
It is really that amazing that there are really signature campaigns that could last up for how many years which to those who had joined up are really that making some at least income
or extras on the way that they are posting on this forum.

Wow look this one, there's a lucky gambler win for $9,253,350 by betting $750 on Wanted Dead or a Wild by Hacksaw [1].

The amount he win is really big, but $750 for every bet in slot is really big too lol, so there's a chance the gambler might lose more than this winning, maybe if he's keep betting in this game to hit the highest multipliers.

It's really crazy to see how he can afford to lose so much money for gambling.

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[1] https://twitter.com/Roobet/status/1622990695244890113

The maximum pay out for the slot "Wanted  Dead or a Wild" is 12500x. That user was very near to max win .
It really satisfies me whenever I see a full screen of VS symbols from these slots. I forgot what was the highest VS total multiplier from this bonus, was it 32 or 31? Anyone?

Was these a bonus buy or an got from an 'organic' bets?

Yes, Roobet is one of the gambling platforms that has been around for a long time in the gambling industry and has been promoting a signature campaign that has been said to have taken a long time.
The Roobet series of gambling platforms is included in a platform that is quite good and has a fairly high level of trust among gamblers.
Even though for now it is still inferior to some of the top platforms, Roobet can show that they can survive in the fierce business competition and prove they are worthy of being used by gamblers.
So I myself applaud the team that manages and supports the progress or development of Roombet because they worked well and managed to show quite impressive achievements.

Yeah there isnt any bonus buy on $750 and max single bet is $75 so yeah this guy got the bonus rounds from spinning the slots instead of buying it. It could be Foss though because for some reason he retweeted Roobet's twitter post of this and he usually repost stuff from Roobet's that stated he won huge winning from the site ( I could be wrong about this )