I am on Pinterest (as bittenbyknittin, of course), but I'm pretty sure I am not using Pinterest the way it was meant to be used. I've heard people say they get lost there, for hours at a time, but I don't because I don't look at other people's boards and pins. Instead, I use it as an efiling cabinet of sorts. (Hence, the fact I can't create subfolders really annoys me.) I pin links to recipes, gardening ideas, crafting activities, etc. I (hopefully) will reference in the future. Previously, I had been capturing screen shots and storing them in MS OneNote, but that is a bit tedious. Also, with Pinterest, I can pin the same link to many boards, for cross referencing. Lately, I have been capturing recipes for rhubarb and home canning and other kitcheny pursuits.
Do you use Pinterest?