So why is it that great? I can think of the following reasons:
- Sharing is very quick and easy. It's really a mobile-first experience.
- You share pictures of your work in progress. That results in totally lovely sewing feeds where you can see how something comes together.
- There is so much less spam than on Twitter. Bots just can't shoot great photos yet. People are active and comment a lot.
- There's no overly restrictive limit on comment size, so people use hashtags on their photos to refer to pattern codes.
- Pattern linking isn't done at large scale. People use different ways to write the hashtags for the same pattern.
- It's hard to build a community around a particular sewing niche and it can be hard for newcomers to find their way in, just like on Twitter. Building a tighter-knit community requires an active, continuous effort - someone needs to step up and claim a hashtag for everyone to post under. A good example of this is how Joost built the sewcialists.