Googlefight as a grammar tool

Many of you should already know googlefight. Pretty funny, one could say a lost of time.
I use it seriously for english grammar. I don't always have a grammar reference with me, so in doubt I use googlefight with quotes to search for an entire expression.

Example: googlefight
"to answer someone" -> 27,100 results
vs
"to answer to someone" -> 14,300 results