I know this stamp is from 2 years ago but I can't help but like it. If I was an artist I would love people just stopping by my account. And a comment or fav will be well appreciated.
But most artists don't think that way, and will most likely raise hell if you only fav and don't comment. Commenting can provide them with critiques and stuff like that but most people can't write a essay size critique. Besides, most people aren't actually critique-rs, they might be able to point out some mistakes, but getting on them for writing something shorter than a 500 word comment is ridiculous.
If I could I'd use this I would, but alas, I'm too broke to get a subscription. Good job!