If you use WordPress and make use of the <!-- more -->
tag, some of you may want to still show the complete post in the RSS feed.
You have to change some code, but it's easy to do.

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In all the wp-includes/feed-*.php
files, change:
$more = 1;
To:
global $more;
$more = 1;
This will change the global more flag and include the complete post - as my blog does. Happy hacking.