But I do like to have copies of the ones I like.
As do I, but it only takes me a second to click one of the download links and usually the download is completed even before I move on to the next story. That is why it confuses me about your need for a download manager.
I sometimes correct the various grammar and spelling errors on my copy if I think I'll read the story more than once.
Again, I do the same thing, usually during my initial read through.
In the unlikely event that any of those stories are mine, I'm always glad to receive corrections.
If I find a lot of errors or ones that really throw me out of the story, I usually send a comment quoting the original and my suggested corrections. Occasionally, I find a passage I can't make sense of and will question the author. As far as I remember, I haven't had any issues with your stories.