Here's a browser extension for working with selectors that was shared on the front page sometime last year: https://github.com/hermit-crab/ScrapeMate
Edit: I think it was from this discussion: https://news.ycombinator.com/item?id=24057228
Edit: I think it was from this discussion: https://news.ycombinator.com/item?id=24057228
As far as selectors go, we're currently working through how to support more specific selection when there's multiple HTML element alternatives for a single visual element (e.g., nested tags with no padding/margin).
This isn't too big of an issue for scraping text, but comes into play when pulling attributes, or when using the selectors to modify the page structure. (Our tool lets you place buttons, panels, etc., copying the style/structure from existing elements)