It seems that the badmintoncentral software puts advertisement links into my posts. Since I like hyperlinking, I often have regular links in my post which point to sources of a claim or further material. These links are basically always useless; at one point the term professional player was linked. I don't believe there is a significant income, but I can offer to offset the ad losses by paying the amount badmintoncentral would receive from these text links in, say, 5-10 years.
BC is currently covering the server cost from the links. Which amounts to quite a bit of money over the course of a year. I am not sure if it is reasonable for one person to pay for the whole cost.