Sometimes I don't know the answer, but i know how to find one (due to familarity or previous experience).
I think the "due to familarity or previous experience" is key here, as that enables you to value the search results before posting them.
If you truly feel the search result is okay, then I'd say posting it is fine. (In the way the other answers suggest.) Great.
But if you cannot really tell what the search result means, then please don't post it. Posting things you don't really know about might still give readers the impression that the answer was posted based on your own experience. It might even get some upvotes, just because it looks okay. Also, the sole fact that some answer was posted might keep others from even reading the question.
Or, if you can only assume it's okay, you could of course include some disclaimer like "It's not really my cup of tea, but Google suggests...".