So. You see a DD that you don't like - what do you do?
Do you sit down and type a polite helpful comment detailing how the piece in question can be improved? If you do then well done you.
Do you ignore it and let the deviant in question have their 24 hours of fame, realise it's only a staff feature and move one? Good.
Do you go in all angry and leave comments like "This is crap!" "The standards are falling?" "This doesn't deserve a DD!!11!one!" Tut.
That is not the way to go about it.

YES you are entitled to an opinion. But you have to remember it's not the deviant in questions fault - they didn't ask to be featured. You wouldn't like it happening to you.
If you wish to complain note the Gallery Director that featured it - they will happily talk it through with you. These people can be found here - FAQ #18: Who selects the Daily Deviation and how is it chosen?
There is also a complaint thread at the top of this forum here -> [link] but don't single anyone out.

A little community spirit goes a long way guys.