My traffic is probably too low to earn significant referral income right now, but it may be a decent idea in certain cases. One place where I've considered add

My traffic is probably too low to earn significant referral income right now, but it may be a decent idea in certain cases. One place where I've considered adding affiliate links is dealing with copyright violations. People have shared translations of Harry Potter in different languages which I've removed, and I thought that it would be cool to leave the first few pages and put an affiliate link to amazon to buy the item. And in future it would be awesome to actually sell novels and graded readers directly via Readlang. I wouldn't email my customers to advertise another service since it seems way too spammy, but I could imagine referring to another service if I thought it was really useful. I've been thinking of pointing beginner learners to Duolingo since I think it could complement Readlang, but since it's a completely free service it's not exactly a revenue generating idea! You can upload whatever you like for your own private use, but publicly sharing copyrighted content is obviously not allowed.