lol ... yes torrents does require sharing. And Vuse more or less forces you to share. If your share ratio gets too low, it auto slows your download speed until your ratio picks back up.

I have no idea how LW handles sharing with torrents & how it deals with ratios. It does not show ratio figures anywhere. And since you can choose not to share torrents with LW, perhaps it is an option.

Some torrent programs including vuse include options which some users use that limits their sharing to people with a ratio higher than their specified amount. Some people have these set rather high, so many people cannot download from them.

As for LW, it is not officially recognised as a proper torrent program. And thus some sites & some private torrent clubs ban it.