I just joined recently as a mentor. They're busy at the moment setting things up but they have a good foundation going, they have mentors and mentees under various different categories including anime and manga. I don't have a mentee yet but as long as you're genuinely dedicated to improvement I'd be happy to critique your stuff.
Sharespot is completely new and we hope to recruit some new members and mods We might not provide great critique, but in the future we hope it'll be a fantastic place to share your art and get exposure!
join the club. *laughs* 99.9% of people wont even leave a comment let alone a critique. but good luck finding one. there really arent groups like that unfortunately. its sad but true as far as i can tell. but dont get discouraged. if nothing else why not make one yourself? there is nothing stopping you, right?
This is why I created Critique Geeks. I got sick of people faving something but not saying anything about it (or if I got any comments its "Thats so cool!" ...Thank you that was incredibly helpful). I really want a good group of people that is willing to help each other out. We all want to improve and thats my goal with this group. I'm considering creating a forum outside of DA so we can have a little more discussion on submission and worry less about being overloaded by group submissions.
If you are looking for a place to get feedback, and of course give feedback to others, then try us out