[anoved]

Hi Paul,

Actually, using the "Advanced mode" of the recipe editor, you can customize the recipe to include a timestamp in the title of the ebook as it is created. I haven't tested this extensively, but it seems to have the desired effect - if I fetch news from a timestamped recipe twice in a row, both files will will appear independently on my Kindle. Technically I think this is because the different timestamp cause the titles to be treated as different periodicals, not different issues of the same periodical. This may have other side effects, but eliminates the annoying side effect of the Kindle replacing one with another when you delete it.

Illustrated below with a simple one-feed RSS recipe. First, as it appears by default when you switch to advanced mode:

class AdvancedUserRecipe1328584372(BasicNewsRecipe):
    title          = u'Inn at the Crossroads'
    oldest_article = 7
    max_articles_per_feed = 100
    auto_cleanup = True
    feeds          = [(u'Inn at the Crossroads', u'http://innatthecrossroads.com/feed/')]

Now, with the timestamp:

from time import time, ctime
class AdvancedUserRecipe1328583601(BasicNewsRecipe):
    title          = u'Inn at the Crossroads'
    oldest_article = 7
    max_articles_per_feed = 100
    auto_cleanup = True
    conversion_options = {'title' : title + ' - ' + ctime(time())}
    feeds          = [(u'Inn at the Crossroads', u'http://innatthecrossroads.com/feed/')]

Basically, I append the time to the base recipe title using conversion_options.