I don't think it's a bad thing. I was in the middle of typing up a post when that happened, clicked on it to read what else went up in case someone already said what I was going to, and the post I was in the middle of was still there at the bottom, ready to be finished and/or sent. Nothing lost. You can ignore it and it goes away; or you can click on it, read, and be on your merry way. IMO, I don't find it very obstructive. But that's me.