my mini wiki's rss

I've mentioned earlier that we are trying to make piece of wiki page available as an rss or json.
We played with an idea of

• using tags within wiki page to enclose the part that needs to be pushed as mini rss/json and also with an idea of
• offering content that is under headings (if you look at typical media wiki page that would be the h2 tag equivalent).

We decided to go with content under h2 only as the first idea seemed a bit risky - users could simply accidentally delete the opening or closing tag.