Our running "battles" are fun and oftentimes lead to @Mrsgnomieand I having a side discussion tossing ideas back and forth. Occasionally it might lead to tweaking a future chapter.
I will sometimes edit future chapters based on comments, usually because a reader will bring up a point that needs to be addressed and I totally missed it. Whether or not it's what the reader wants depends on the story line.
I personally love the comments. It's fun to read all of the theories readers come up with. Once in a while they hit the nail on the head, but I do my damnedest not to be predictable, so they've learned to expect the unexpected.
It helps too, that now I won't post until the story is completed in rough draft form. Once it's written, it's harder to change just to cater to what the readers want.