Hmm, no spell-check feature. Are you sometimes using a browser with a built-in spell checker and sometimes not?
What happens that causes you trouble with the auto completion form? Also, you can message us these type of concerns.. have we ever ignored our beloved moderator?
I'm not entirely sure what occurs on the coding side of it, but on the user side, if you type in a user name and don't click on the auto completed name the message goes unsent. Well, not so much 'unsent' as the recipient doesn't receive it. The message will be in your sent folder.
OK, not sure what might be causing that, but I'll take a look and let you know. Hopefully something simple.
And when will we get a one-touch "Order Pizza" button? And "Order Beer" and an "Order Pizza and Beer" buttons?
We will get working on that ASAP. We've been too busy working on one-touch "do laundry," "pay off my mortgage," and "fix my car" buttons. 
zekej3
Also, I have noticed that sometimes there is a spell-check feature and sometimes there isn't. What's up with that?