kakku Tip from Mr. Dan Cumpian, do not send unfinished works and do not say they are unfinished. That is a , well, a sure way to not get comments if one starts telling about some unfinished job or if it sounds unfinished. At least usually, there are some exceptions I now do not remember.
I disagree ... from a different point of view.
In your area, songs, this is a problem as people end up, inadvertantly, taking advantage of your work, or vice versa. However, and literature is a good example, there are many stories about a lot of sharing (minds and bodies, too!) that ended up in very creative efforts, and these pieces were not finished at the time, and they became finished later ... and it is still unclear how much was taken from the fun and experiences and vice versa. The times and stories of Anais Nin, Henry Miller and June also fit here, as do many others over the years.
The big issue, is that today, everyone is afraid to be ripped off, and in my book this is more because their work is less different than anything else out there, than otherwise. But, in the US, the camaraderie to share experiences and work, died many years ago within the commercial attitudes and calls, through out the whole day in your life. You are a subject to that economy, and you are trapped in it.
The music scene in Germany in the 60's and early 70's is another example, where the friendships helped create something new.
Getting comments is not the issue ... you and I having the ability to be open minded and appreciate the comments is a whole different other story. It's hard to accept a lot of comments here when most folks are here just for the fun and the beat-off! There is no artistic thought behind it all, and finding work behind it, sometimes is weird ... same person? Makes it harder to accept a comment!