Facebook used to allow custom parameters in the Facebook share button, but it is not working now. What I need is to create a Facebook share button which will have a custom title, url, image, description, etc. It cannot be done using meta tags because there are multiple share buttons on a single page. Each should have a different title, urls, images etc. I heard it can be done using the Facebook app - using app id or something.
I tried this but it's not working:
<a title="send to Facebook"
href="http://www.facebook.com/sharer.php?s=100&p[title]=YOUR_TITLE&p[summary]=YOUR_SUMMARY&p[url]=YOUR_URL&p[images][0]=YOUR_IMAGE_TO_SHARE_OBJECT"
target="_blank">