实现创意：根据用户提供的rss地址同步更新用户在其它网站的帖子（http://www.learndiary.com/disDiaryContentAction.do?searchDiaryID=1381&goalID=1381&naviStr=a10a2313）。
既然rss阅读器能够做到，为什么学习日记不能做到呢？
www.43things.com已经实现了它到几个blog的单向绑定，见下面的摘录（摘自：http://www.43things.com/about/view/faq）：
...
Can I post to my blog from 43 Things?
You bet, but first you’ll have to configure an external blog (do that here). You’ll be guided through the set-up process and at the end you can try a test post to make sure everything works.
Once that’s done, you can have any entry on 43 Things show up on your blog as well.
We currently support the following blogs:
Blogger
Typepad
Movable Type
Live Journal
Word Press
You can set up as many blogs as you like. We haven’t made a way for you to delete one yet. Sorry.
Can I post to 43 Things from my blog?
Not yet. But we are working on our API now. More details soon. Check out our API and recommend it to your favorite blogging software developer.
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虽然www.43things.com没有实现从blog到它自身的绑定，但是我在网上好像看到过这种做法，而且rss阅读器能实现的，为什么网站上不能实现？
以学习日记到我在matrix的blog（名为建设学习日记：http://blog.matrix.org.cn/page/littlebat）的双向绑定为目标，不限时间，直到实现。
计划步骤：
１、给学习日记添加rss2.0支持；
２、从学习日记绑定到blog；
３、从blog绑定到学习日记；
这个目标已经在开发社区的issue系统提交两个issue:
１、issue 11:binding learndiary and my roller's blog in both two directions(http://learndiary.tigris.org/issues/show_bug.cgi?id=11)(实现学习日记和我的blog的双向绑定)
２、issue 12:add rss2.0 feed support into learndiary(http://learndiary.tigris.org/issues/show_bug.cgi?id=12)(给学习日记添加rss2.0支持；)