The fastest way to reach us is by email at hello@example.com. We read everything, though with a small team it can take a few days to reply, especially when a question needs us to actually go and test something before answering.
If you have spotted an error in an article, please do tell us, ideally with a link to the page and a note on what is wrong. We correct mistakes openly and add a note at the bottom of the article rather than quietly editing the text. For partnership or guest-post requests, we are flattered but we do not currently accept either.