A colleague of mine, who I regard scientifically, just invited me to submit an article to a special issue of a journal which I consider predatory.
I consider this journal predatory because its publisher released several journals that are considered predatory in my scientific community (bioinformatics), and also for some details like the super-fast review and acceptance process. The last article this journal published, for example, has the following review and acceptance times listed:
Submission: 12th September 2020
Revision: 23th October 2020
Acceptance: 28th October 2020
Publication online: 29th October 2020
This aspect is very suspicious to me.
What should I do now?
Should I tell him that I think the journal is predatory? In this case, he might get offended, and this situation might compromise our future relationship. Like, he might not want to collaborate with me anymore in the future.
But if I say nothing, the scam could go on...