### Comment:
What are some common illegal gambling schemes?

### REPLY:
Some common illegal gambling schemes involve setting up illegal online casinos that operate without a license, running sports betting syndicates that manipulate odds and outcomes, and organizing underground gambling dens that operate outside the purview of the law enforcement agencies. These activities are highly illegal and can lead to criminal charges, hefty fines, and imprisonment. It is strongly advised to stay away from such activities and engage in legal forms of gambling.