Steam clean tile?
Can you use a steam cleaner on tile floors or will too much moisture seep into the grout and possibly under the tiles causing issues with the flooring underneath?
I see no problem with using a steam cleaner for cleaning tile floors.
When using your steam cleaner, you are not putting that much water on you tile and grout floor, so I don't think you are in danger of over-soaking your grout.
One thing I would do is following your steam cleaning with a damp or dry towel wiping up the water and dirt as you go.
Your tile and grout should clean up just fine.
Hope this helps.