In the careers search, there is a checkbox to restrict the search to telecommute only. On the front page of careers.stackexchange.com, however, there is no such checkbox. While I realize that I can just put "Telecommute" in the location search, it took me some time to figure that out.
There are ways around this problem, and it does have a negative UI effect (it may make things cluttered), but it would make the site self-consistent.