Still, though, you do end up, whether or not you realise it, spamming

If its just loads of posts saying Hi to everyone whos already joined, thank you's to everything regardless of whether or not you'll dl/use it, and uploading stuff you know no one is ever gonig to want and wasting your bandwidth.

Its just stupid to think that someone determined to download illegally is gonig to feel any kind  of "loyalty" to the site they downloaded it from. As long as the source is safe, people will download from anywhere and everywhere that has what they need

Well, that's how i see it at least. Like you say, it has a lot to do with opinion