I don't remember how I stumbled across it, but only last week I came across A Mixed Blog, which is a project of The Multiracial Activist.
They've provided a bunch of links relating to a recent Canadian Social Trends report that "(u)nions involving partners from different ethnic origins, religions or visible minority groups still represent a low proportion of the total in Canada, but they have gained ground over the last decade".
They further note:
Now would be a great time to contact StatsCan to see if they will allow mixed people to self-identify on the next census, as people can in the UK
Contact Anne Milan (613-951-2756; cstsc@statcan.ca), Housing, Family and Social Statistics Division.
Yeah, you don't often see a space next to the "Other" checkbox on a survey, where you can further clarify what your "Other" is. I only once recall filling in one of those blanks, and that was back in high school.
Here's hoping for more blank space in the future...