Only thing about that is every word would effectively be a link so if you mean to have links in your post there not going to stand out.
You could use what NYT uses, that sometimes annoying function that opens a search when you click on any word on an article page. I think it’s from answers.com.
Try clicking a word in an article on this page to see what I mean:
When you click a word, you get a little [?] icon, and clicking that brings up a search for that word.
You could use *something* like that to accomplish what you want to do. The post would not necessarily look like all links.