I was just doing an exact phrase match on my site to check out scrappers and noticed that google didn't return a result. After some trial and error, it came out to be the span tag.
Not sure if I've described the issue correctly, so here's an example:
will not match your page if the post content is
To match the same you'll have to try
So are my (anyone's) rankings getting hurt for such key phrases since they begin with a span (I use it to style drop caps) like:
<span class="drop_cap">T</span>his is a drop cap.