使用 ATOM、RSS 或其他聚合提要来获取付费内容
我在一家出版社工作，我们正在讨论通过数字渠道销售内容的不同方式。
除了网络之外，我们还密切关注平板电脑（例如 iPad）和智能手机（例如 iPhone）上内容发布的发展。目前，似乎有四种不同的方法：
- 传统出版社发布诸如之类的应用程序《每日报》、连线 或时代杂志。我个人将它们命名为印刷内容与离线网站杂志。看起来非常漂亮，但是速度慢，数据量很大，并且在可用性方面经常不一致。除此之外：在 Facebook 和 Twitter 是用户花费大部分时间和分享内容的世界中，这些杂志不能很好地共存。
- 简单而愚蠢的 PDF。或多或少是轻量级的，但像花岗岩块一样具有互动性和可共享性。该模型主要由传统发布商和 Zinio 等应用程序使用。
- 针对不同设备提供自定义视图的网站（例如 Die Zeit 的平板电脑增强型网站） 。轻量级，但（至少到目前为止）无法像本机应用程序那样真正利用硬件平台。
- Flipboard、 等应用Reeder 或 Zite 采用不同的方式：在 Twitter、Facebook 和/上转发或者像 RSS 和 Atom 这样的聚合源，它们为用户提供了一种非常个性化的方式来消费新闻和媒体。除此之外，其背后的数据尽可能轻量，分发数据的架构速度很快，并且多年来已被证明是可靠的。
就个人而言，我认为#4 是可行的方法。不幸的是，上述应用程序仅分发免费内容，作为出版社，我们也有兴趣分发付费内容。
我在谷歌上做了一些研究并得出结论，没有标准化的方法来保护和销售联合供稿中的单个文章。
我的问题： 您对如何以与平台无关的方式实现这一点有任何提示或想法吗？或者是否有我尚未找到的现有解决方案？
更新： 这篇文章准确地解释了我们正在寻找的内容：
“发行商和开发者需要的是 一个标准的API，使 经授权分发内容 目的、监控其使用、提供 标准广告单位和 订阅要求，以及 提供了一种分享收入的方式。”
I work for a publishing house and we're discussing different ways to sell our content over digital channels.
Besides the web, we're closely watching the development of content publishing on tablets (e.g. iPad) and smartphones (e.g. iPhone). Right now, it looks like there are four different approaches:
- Conventional publishing houses release Apps like The Daily, Wired or Time Magazine. Personally I name them Print-Content-Meets-Offline-Website Magazines. Very nice to look at, but slow, very heavy regarding datasize and often inconsistent on the usability side. Besides that: These magazines don't co-exist well in a world where Facebook and Twitter is where users spend most of their time and share content.
- Plain and stupid PDF. More or less lightweight, but as interactive and shareable as a granite block. A model mostly used by conventional publishers and apps like Zinio.
- Websites with customized views for different devices (like Die Zeit's tablet-enhanced website). Lightweight, but (at least until now) not able to really exploit a hardware platform as a native app can.
- Apps like Flipboard, Reeder or Zite go a different way: Relaying on Twitter-, Facebook- and/or syndication-feeds like RSS and Atom, they give the user a very personalized way to consume news and media. Besides that, the data behind it is as lightweight as possible, the architecture to distribute the data is fast and has proven for years to be reliable.
Personally, I think #4 is the way to go. Unluckily the mentioned Apps only distribute free content and as a publishing house we're also interested in distributing paid content.
I did some research googled around and came to the conclusion, that there is no standardized way to protect and sell individual articles in a syndication feed.
My question:
Do you have any hints or ideas how this could be implemented in a plattform-agnostic way? Or is there an existing solution I just haven't found yet?
Update:
This article explains exactly what we're looking for:
"What publishers and developers need is
a standard API that enables
distribution of content for authorized
purposes, monitors its use, offers
standard advertising units and
subscription requirements, and
provides a way to share revenues."
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只是集思广益，所以请考虑它的价值：
Feedreader 无法进行购买，但他们中的大多数至少可以让您对 Feed 进行身份验证，对吗？如果您的免费提要经过身份验证，您将能够将原子条目的检索与给定的用户帐户联系起来。检索可以根据购买的文章检查用户帐户，并确保它们包含完全付费的内容。
对于未购买的内容，提要会填充一个链接，将您带到“购买文章”页面。您调整该用户帐户，下次更新源时，源将显示完整内容。您甚至可以提供“文章轨道”或类似的东西，人们可以通过给定作者撰写的所有内容或匹配某些搜索条件的所有内容。您可以相应地调整费率。
您还希望能够允许人们通过社交媒体网站和博客等向其他人推荐文章。为了实现这一点，无论购买与否，文章 URL（以及原子条目 id）都需要相同。只有 Feed 的内容会根据访问 Feed 的帐户的状态而变化。
在我看来，诀窍在于提供足够的诱惑来让人们创建一个帐户。据推测，您需要阅读有趣的内容，并且可能需要其中一定比例的免费内容，以便人们想要更多。
另一个问题是阻止付费内容重新分发到免费频道。我不知道有什么办法可以完全防止这种情况。您需要按帐户监控 Feed 的使用情况以查找访问异常情况，但这是一个难题。
Just brainstorming, so take it for what it's worth:
Feedreaders can't do buying but most of them have at least let you authenticate to feeds, right? If your free feed was authenticated, you would be able to tie the retrieval of atom entries to a given user account. The retrieval could check the user account against purchased articles and make sure they were populated with fully paid content.
For unpurchased content, the feed gets populated with a link that takes you to a Buy The Article page. You adjust that user account and the next time the feed is updated, the feed gets shows the full content. You could even offer "article tracks" or something like that where someone can by everything written by a given author or everything matching some search criteria. You could adjust rates accordingly.
You also want to be able to allow people to refer articles to others via social media sites and blogs and so forth. To facilitate this, the article URLs (and the atom entry ids) would need to be the same whether they are purchased or not. Only the content of the feed changes depending on the status of the account accessing the feed.
The trick, it seems to me, is providing enough enticement to get people to create an account. Presumably, you'd need interesting things to read and probably some percentage of it free so that it leaves people wanting more.
Another problem is preventing redistribution of paid content to free channels. I don't know that there is a way to completely prevent this. You'd need to monitor the usage of your feeds by account to look for access anomalies, but it's a hard problem.
我们目前正在遵循的解决方案：
我们将为付费和免费内容使用相同的 Atom feed。提要中的付费内容条目将没有任何内容（除了标题、摘要等）。如果用户选择购买该内容，则会从网络服务中获取缺失的内容并将其插入到提要中。
缺点：购买流程并未在任何现有的 feedreader 中实现。
有人有更好的主意吗？
Solution we're currently following:
We'll use the same Atom feed for paid and free content. A paid content entry in the feed will have no content (besides title, summary, etc.). If a user chooses to buy that content, the missing content is fetched from a webservice and inserted into the feed.
Downside: The buying-process is not implemented in any existing feedreader.
Anyone got a better idea?
我一直在寻找其他东西，但我遇到了适用于 WordPress 的 Flattr RSS 插件。
我没有时间仔细阅读，但也许你可以在其中找到一些有用的想法。
I was looking for something else, but I've came across with Flattr RSS plugin for WordPress.
I didn't have time to look it through, but maybe you can find some useful ideas in it.