People have different opinions so if you are not okay with promoting gambling then you can stop doing it but some think it is kind of guiding the people to right sites to place which actually save lot from entering into scam gambling sites.And I am also not think this is anything wrong.
That is it and we should not allow some one demonize gambling. Promoting gambling is not wrong to me because it is a choice to play and not to play and if your conscience condemning you then you should not promote it but if your conscience did not condemning you then it is good you should promote it.
All really depends on peoples strong will power. Even if somwone introduces gambling on them, they will just make it as an entertainment or time killing event rather than a source of income or livelyhood. You do not really earn in gambling if you are not a house but gambling really makes your boredom go away.