Twitter makes it hard to find, but if you replace “USERNAME” with your Twitter user name in the URL below, it is the RSS feed of the tweets you create:
Why is this important? Twitter is beginning to cut off other services from having the ability to simul-post your tweets.
Having an RSS feed of your tweets can provide you a work-around.
Or use Tumblr (or LinkedIn) to create your tweets and feed them to Twitter (rather than the other way around).
I’ll post other work-arounds later.