I was looking at the pictures forum and noticed several breast bondage pics with dark purple breasts.

I have had one experience with breast bondage which I actually did not enjoy at first and then found myself not wanting the ropes removed. However the Dom I was with, was actually demonstrating several things to me and informed me that it was unsafe to leave breasts bound for extended periods. I seem to recall him mentioning more than 45 minutes was damaging to the breast. I do recall turning reddish and being a bit curious about the blood flow situation. I don't honestly remember the exact nature of the color but it certainly wasn't this dark purple that I just saw in the photos.

So I came here for further edification on the subject and see this post by BDSM_tourguide.

You do have to be careful not to wrap them too tightly, or if you do wrap them tightly, keep a close eye on them. Watch the color. If the breasts start turning purple, it might be time to unwrap them. Also, feel them. if they are cold to the touch, that means they are not getting enough blood and you should unwrap them as soon as possible.
which was really what I wanted to know. Then later in this thread I see a post also by BDSM_tourguide that says (and i could not figure out how to quote from two posts that far apart..) but it basically said here is something fun to do... and one of them was watch the breasts change color and turn purple.

I've only just begun to post here and am very impressed by BDSM_tourguide and his knowledge of BDSM and so I am asking for further info on the breast bondage subject,from him ([bold]H[/bold]im *wink*) or anyone else with knowledge on the subject.

When should a sub be concerned about the blood flow in her breasts? is it true that you can only leave the ropes on for a short amount of time?