I just wanted to add a little bit here.  PeeWee05 was one of the first to give me a good constructive critique on a rose photo of mine....  I was thrilled to get it... so much in fact that I wrote her and said how much I appreciated it!  She's also been an absolute sweetheart in giving me advice on how to better use my camera and I so appreciate her time!

I'm still learning and probably will always be. That's just part of being human.  This subject came up just last week in another site that I frequent and a good point was raised.  Very simply a gentlemen stated that there is a huge difference between giving a constructive critique and a critical critique.  I think he had a very valid point.  It's hard sometimes to interpret words on the internet since we can not "see" or "hear" the other person to better understand what they might mean.  Emotes help but still sometimes it's hard to tell.  I guess just be real with eachother and kind in your choice of words and if there is something about someone's critique that you don't understand message them and simply ask.

On one last note - giving a good constructive critique is a learned thing - I know a lot of my first comments here and on other sites were a lot of the "nice capture" and "wow" variety but from reading other's comments I'm learning more each day how to better put into words what it is that I like or don't like about someone's work.  My former color and design class instructor would be proud LOL.  That was the part of the class that I stunk at completely LOL.  Still sometimes when pressed for time I fall back into the short two or three word comments.

oh and btw - constructive critiques are more than welcome on my gallery.... 
I think I might add that text to my notes under each upload as well it's a good idea :-)  
I also give my vote for the extra flashing text bar that says YES I really want a critique LOL

Thanks for your time :-)
Lisa