I would like to download everything you put out, but sadly, I have to pick and choose. I have low bandwidth - its the best package I can afford at this time as internet access is still quite expensive in my country. Governent restrictions make it very difficult, and expensive, for me to get access to newsgroups. Typically, our news servers have no alt. binaries listings.
Most news servers don't have unlimited space; as more posts are added, the oldest posts are deleted. This wasn't a major problem a few years ago, but now, as people post hundreds of huge files, the end of the line comes sooner for older files, especially on the smaller news servers. Unlike p2p, once a newsgroup post is gone, its gone for good.
As a result, the only types of downloads available to me are direct, ed2k and torrent, of which I like ed2k best. 100% corruption free, works more or less without user intervention, and the posts typically stay alive for years. Even just one source is enough; you just have to be patient and you'll eventually get it.
The part selection you mentioned: the clients simply select the rarest (least distributed) part when their turn comes to download. This tries to ensure that there are an equal number of sources for each part, which is excellent for distribution.
Sadly, there are those selfish people who will stop sharing the file as soon as it completes.

This is what hurts the network, as a complete source is taken offline. This is why we have communities like FLM; at least you know that these downloaders will help you distribute the file, not only uploading whatever parts they have while their file is still incomplete, but also by continuing to share the file long after it completes. It is a good idea to give preference to such users. Adding them to your list of friends gives them a 2x boost in their score, so their turn to download comes quicker.
Finally (whew, this is one long post!) I have found that regardless of what you post and where you post it, it is impossible to please everyone.

People differ, their tastes and preferences differ. I have found that the best policy is to 'label the box' as unambiguously as possible. If people have a better idea of what they are downloading, they know what to expect and will not be disappointed.
Case in point: There are people who are just looking for flashes of nudity; put the words [No Nudity] in your posts and you'll get no complaints from them (these guys tend to complain a lot

)
And don't worry too much about 'first love' either. By that standard, Homecoming, my favourite movie found on this forum, is completely off topic!
