We've enhanced our wikitext code to support Wikipedia's "Extended Image Syntax" -- meaning profile "About Me" biographies and project descriptions can now place frames and captions on images, float them left or right, and make the images (and captions) links. Examples for how to use these features can be found by clicking the "formatting help" link at the top-right of the wikitext input box, or you can view it as a stand-alone page here: http://www.geni.com/help/wikitext
In short, you could previously insert an image using double curly braces:
{{//example.com/path/image.jpg}}
but now you can use the verical bar separator after the image path to add various options:
{{//example.com/path/image.jpg|border}}
{{//example.com/path/image.jpg|frame|Caption Text}}
{{//example.com/path/image.jpg|right}} (or left, center)
{{//example.com/path/image.jpg|150px}} sets width, height scales
{{//example.com/path/image.jpg|150x100px}} sets width and height
{{//example.com/path/image.jpg|x100px}} sets height, width scales
{{//example.com/path/image.jpg|alt=My Image}}
{{//example.com/path/image.jpg|link=//example.com}}
Note that if you specify a link and caption text, both the image and the caption text will become links. Please post here if you encounter any difficulty, and special thanks to curators Private User and Dimitri Gazan for encouraging this development.