The concept is pretty simple. Its #followfriday gone trans.
Each Tuesday recommend trans people or organizations on Twitter that you think others should be following. Say a few words to describe the people/groups, link to their Twitter account and end with the hashtag #transtuesday.
Here's an example: Women who rock: @allysonrobinson @mzmartipants @nclrights
You don't have to be transgender to join in the fun. Just supportive, open to meeting new people and willing to share relevant info.
Now go out and twitterfy.