Also, if you'll notice ... at the bottom of each note / comment that you post here on DA, there is a little underlined tab that says "Emoticons" in the lower left portion of the window (just above the checkbox [ ] that says "Remove this message after I reply".
You can click on the Emoticons link and up will come a pop up window that displays multiple emoticon faces / emotions / humourous themes / etc. that you can use to pepper your deviantART commentaries with.
There is also a icon box to the right of the commentary window that displays the emoticons by groupings (but for some reason or another, it doesn't work on my laptop ... hence my use of the underlined "Emoticons" link). You can sort through the emoticons by Alphabetical listings / Group listings / etc. using the sorting choices at the top of the Emoticons pop up window to better facilitate the icon that you are looking for.