Suggestion: adding mattress sizes
On Facebook, there have been many topics on mattress sizes. Often, when members describe the sizes, they use terms that mean different things in different countries, like king size and queen size. I have no idea how big those beds are. Also, it’s not obvious which sizes are meant by a double bed. When my children were smaller but not the smallest anymore, I often wondered what the sizes of children’s beds would be, for you often can’t really make that out on the pictures.
I put the sizes of our mattresses in my profile, in meters and in inches.
For us, it is important how big the mattresses are, especially since our youngest son is 192 centimeters long (75,6 inches). Beds in France are often 190 centimeters long, so then he sleeps with his feet out of the bed. 
Since members already have to fill in what kind of beds they have, how about adding a box where they can type in the size? I think it would be helpfull for many members, especially the tall ones!