Is there a place to review journals or conferences? There are plenty of journals and conferences in my research area. And there are things we could look up in advance, like impact factor, journal rank and so on. 

But I would like to find a place where I could put my personal experience with the journal (or conference). 

For instance, in Amazon the customers can review and criticize the books they read. In my country there is a site where you can complaint about any company that failed to satisfy the customer (a flight company, a magazine, a bank, etc). 

One could argue that this would be unfair to the people that invest their time as editors or reviewers, but in my opinion it is a two-way relationship. Things like waiting one year without an answer from editors, poor review or evasive answers, is a disrespect to a research group who invests a lot of time as well.

So, is there a place where one could respectfully give a review and share their experience with a journal or conference?
There are a few sites that do this:


SciRev
Journalysis. 
HelpMePublish. 


Of these, I think SciRev is the most active, but I'm not certain about this. That said, in my experience, the actual rating information on these is not of much value. Uptake is pretty slow, and most of the reviews I've seem to just very high marks indiscriminately. As a result, you can't infer too much from the tiny sample sizes available. The information about time to result, review quality, etc. might be useful in principle, but in practice again you've got tiny sample sizes and probably a selection bias as well in terms of who submits reviews -- though I don't know which way this selection bias would go. 

Nature wrote a news piece (not paywalled) about these sites in early 2015.