It provides results indexed by Google, and this displays results of all installed component like Kunena, VirtueMart, FLEXIcontent, K2, Agora, JEvents, Community Polls, hwdVideoShare, jDownloads, DOCman, EventList, ZOO, Community Answers, SOBI2 ,....
No need to be installed Joomla! search plugins.
It can be connected with AdSense account to list Google ads and to make money.
You cannot use quotes in your search withing the module search. Quotes in the search term will work in the components search. I have contacted the owner about this, but have not heard back.
The other issue is more of a nit-pick. The search results only display 4 results. In my opinion you should be able to enter how many results you would like displayed.
All in all, this is better than the stock Joomla Search.
Thank you for the review.
I replaced the old AJAX search API with the new Google Custom Search API.
I fixed the bug with the quotes.
Now you are able to list more than four results.