I used to use Yahoo Pipes to fix this exact annoyance. Pull down the RSS feed, find the "read more" link, then pull down the full article and output a new RSS f

I used to use Yahoo Pipes to fix this exact annoyance. Pull down the RSS feed, find the "read more" link, then pull down the full article and output a new RSS feed with that. Since Pipes went away I use a python script on shared hosting to do the same. It's more powerful but to say it is nowhere near as user-friendly would be an understatement.