Following the uploads of many games on archive.org, the internet archive now features Twitter support so just like youtube videos and pictures, you can now access the "media" directly into your Twitter page.

Article with examples:
http://gamasutra.com/view/news/242329/You_can_now_play_classic_games_in_tweets_thanks_to_The_Internet_Archive.php

DMCA's incoming.....

PS: would be a good opportunity to ask Tim Schaffer about this tonight....