actually, it seems to try to be smart about capitalizing

Well, if you're using the speech recognition for your posts in this thread (I assume you are), then I don't think it's doing a very good job with capitalization. Only half of the words after a period are capitalized (none at all in your last post), and it seems to never capitalize "I", which I would think would be pretty clear and simple.

Of course, if it's you writing the posts, then hello Mr cummings