Dusen

So I have read a lot of posts here and I just don't understand what is going on with this visa stuff. I have a merchant account here in Canada for Visa and MC, and I sell non-adult goods as well as webhosting. I also use a catalog complete service from IBill to sell non-adult goods. I have not heard a thing from anyone regarding this. Will I have to start forking out this $750 now?

Or is this just based on "High risk" sites like porn or adult goods.

Thanks

J