Some of the designers might know this, but when you think you finally found a solid set, boom you’re missing one site. ARGH!! Makes you turn into a Super-Hulk-Pirate. Granted there are some nice premium sets, but what good is ten thousand spoons when all you need is a knife. Lately I found this site iconfinder.com to help fill in that gap. You can search by the company name, author, and most of all filter it down by the file dimension. One icon set I like is by Leslie Nayibe. She seems to have all the social media out there–which is very nice.