I've been trying to solve this for some time and am about to hack the Wall module js but maybe someone here has some insight.
I can post a web page URL as a Link post and it shows on the timeline as a page preview with an image and teaser text. I enter the same URL into a text post and it displays as a hyperlink. Is there any way to have the preview show in the Text post? My client wants to be able to comment on the link in the same post ala Facebook et al.
I have an embed.ly API code and Youtube embeds are working fine within Text posts. I've also generated a full list of sites at embed.ly to include more than the 'image/sound/video by default' and pasted it into /inc/js/jquery.dolEmbeldy.js per the comment
// only videos/sound/images are supported, to generate own list goto http://embed.ly/tools/generator
but no change, so maybe emded.ly isn't involved with Link previews after all??
Any help would be appreciated.