Do you search for free wallpapers, ringtones for your mobile, wordpress/blogger skins, music or free software, widgets for your blogs, If your answer is Yes than the following tip will be greatly helpful for finding quality stuff for Free.
No matter what you are searching for if you use the word free in the search string you will be bombarded with spam in your search results. why waste your precious time searching for them when you can find them ready for you to be consumed.
There are a lot of social bookmarking sites like Digg.com,stumbleupon.com, del.icio.us, clipmarks.com, slashdot.com on the web where you can find the best websites which offer quality free stuff reviwed and ranked by the users, all you need to do is to point Google to search those sites for you.
you can acheive that by using the special operator "site", here is what you have to type in the search bar:
site:digg.com free "wallpapers"
site:del.icio.us free "ringtones"
Some not so well known but greatly useful Google tips.
Tips to use Google Like a Pro. (Edited)