I use http://redirectdetective.com/ a lot, and I love keyword searches. I'd love to combine the two, but it doesn't seem to work; the bookmark destination shows as this:
javascript:xmlhttpPost("/linkdetect.px")?word=%s
Just in case, I tried setting the destination to http://redirectdetective.com/linkdetect.px?word=%s
and a couple variations, but it just leads to a totally blank page.
Is there a magic URL that will make this work, or does the way the search function is designed prevent it from being used this way?