Twitter your Flickr photos, from the Flickr Blog:

We've launched our Flickr2Twitter integration.

Share your Flickr content either via "upload by email" or feature existing Flickr content in your Twitter stream.

If you'd like to Twitter your Flickr then check out the following three FAQs for easy setup and use:

How do I Twitter my Flickr photos?

Can I post to Flickr and Twitter from my mobile?

How do I Twitter from Flickr?

Of course it's only the link to a photo that appears in the tweet.

(Such an arcane, childish language we speak these days.)