For the couchapp I'm writing, I recently wanted to do a bulk delete operation with CouchDB, but found very little about it on the web. I don't know if my approach is the best way to go, but well, it works - if you know a better way, I'm happy to learn about it.
In CouchDB, there are a couple of convenience methods in jquery.couch.js to help you dealing with the database, documents and views. There is a method for deletion too (removeDoc), but it only can handle one document at a time. In the style of bulkSave, I added a bulkRemove method: