The Internship Forum was specifically requested by SDN users; thus it was created because there are issues which are specific to internship.
It is only viewable if you are registered and logged in; this is to decrease trolls who stop by without registering from starting trouble. Therefore if you are perusing the forums without being logged in, it will not show up in the list.
Most users who frequent the General Residency forum also visit this one. While the numbers of users in the Gen Res forum are higher, there is a larger amount of pre-meds, non US physicians and others there whereas the Internship Forum tends to be populated with actual interns and residents in the US.
Since the OPs question has been answered, and it was moved here by another Admin, there is no reason to move it to the General Residency forum, IMHO, but I will do so.