I play at a couple of sites, some sites offer a great community, Support from the players and moderators.... To bad some sites don't offer a great community.. for example, "Bitsler" just recently a friend got his account blocked for tipping because he made a profit and decided to exchanged his bitcoin profit into another coin.. then he decided to tip his friends with his profits.. but the site decided to flag his account for exchange abuse and block him from tipping. Then we had people trying to challenge this decision on this site and we had a moderator mocking a user for their attempt to speak English and threaten people with a report to the administrator... and this probably why I don't play there much anymore.
For me, if a site has a crappy community ... I won't play there much maybe... I'm gonna deposit, roll and ditch out with a withdraw... but if they have a good community... there a slightly good chance I might roll there a little bit longer and not withdraw "yet" =)
https://www.change.org/p/bitsler-staff-justice-for-sully-unblock-sully-s-tips-on-bitslerHaving an online communtiy is an integral part of a legal and transparent business. That is very important for the businesses related to gambling and money making. That gives correct idea about the operational integrity of any business based on the public review.
However, not all online communities are trusted as admin can create fake accounts to maintain a positive outlook of the business. That is why I trust communities like bitcointalk more than the company's own community. Here people can provide unbiased experiences about any particular website or business. Being a third party provided community provides more clarity on situations becasue the gambling website owner usually doesn't have any control over the comments.