I updated my feed-abstract gem to support twitter RSS/Atom, in that it will automatically parse hashtags and turn them into RSS item subjects/categories. Huzzah! This is pretty fun, as it allows tweets to be aggregated into TagTeam seamlessly and they can be remixed, archived, and searched by tag.
You can get at twitter RSS/Atom via URLs like:
https://search.twitter.com/search.atom?q=url encoded hashtag
I’m sure there are more search parameters available too. If you want RSS, just change the “.atom” to “.rss”.
A long, complicated project of mine (under the direction of Peter Suber and the auspices of the Harvard Library Lab) is nearing its release date – TagTeam (source, demo site).
TagTeam is an RSS/Atom/RDF aggregator that allows administrators to remix and republish feeds on multiple levels. It also allows for the filtering of tags – additions, substitutions, and removals in a flexible “tiered” filtering system.
It uses the feed-abstract gem I wrote to create a “common object graph” between the different feed formats – this has been a huge time saver and made feed parsing much more reliable.