"Lingo24 seeks to be the leading language and translation site on the Internet. Below you can find our early offerings – please do bookmark this page and come back soon, as we have more irons in the fire!" I recommend you check out their "Parasaurus Englix – English language paraphrasing tool". It's kind of like having a thesaurus for full phrases rather than just words. I used it on a few English phrases and idioms and got some interesting results.