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Beginners Guide To Pinning ... Wish I had this when I started on Pinterest. Yeah, I went through that mindless rabid pin hoarding phase too. I'm still researching and repairing my pins from my early days here so to link directly to a Primary Source (ie the artist, photographer, archive, or museum site). So now I "like" incorrectly sourced pins (from social media ie blogs, facebook, tumblr, twitter, etc) to research later (if ever, truthfully :-) and go for quality over quantity these days.
**Warning** I found that there is a LOT of great information in this Pinterest Guide. Maybe you should pin it now, reference it later. Okay carry on, happy pinning...
How to pin successfully: Upload at least some own images, make sure the file name of your image contains your targeted key phrase, pin from a variety of different sources, link your pictures, use the 500 characters description, pin according to your taste, don't forget that pinterest is social, create a variety of different boards, add the follow and pin it button to your website, express yourself