What have your experiences mentoring there been? I’ve been considering checking it out - do you have to do much to ‘sell yourself’ there in order to get clients? Do you have to deal much with poor spoken English skills?

A bit of a mix to be honest. The practical/technical aspects of the platform is good. There is some basic quality checking (and guidance) of mentors - good without being onerous. And the 1-on-1 experiences I have had were good. But I found it difficult to get a reasonable amount of gig the few weeks I tried it more actively. Majority of the requests posted are very low effort, barely two coherent sentences about what they needed. For a subset of more serious requests, that fit my skill set, I wrote personalized messages describing how I could help. I also made clear I offered half price for students and early professionals. But the hitrate was extremely low, maybe 2%. Probably my rate was too high for those requests. But it is already set lower than what I charge for regular longer term engagements. Maybe it looks bad I only have 3 reviews, idk... Overall I have found that it is not good as an added income source (as someone in a high CoL, Norway) - but it is great as a low-friction offer for those that find me and really want a bit of my advice in particular. They then find me via GitHub etc

I have been doing a few mentoring sessions there and it has been a great experience. However, I don't see that many people asking for mentorship there, I wish the volume of mentees was higher.

I did some mentorships there (as a mentor) a few years back. My experience was "meh." Most of the mentees were last-minute students looking for help with their assignments.

But their SEO must be excellent. I still get web traffic and referrals from there.