The style of the reviews on Litrefs Reviews doesn't appeal to everyone, not even to all of those who read theory, so I thought I'd better offer this rationale
On his blog Rob MacKenzie asked "What the best approach for a reviewer? Is it best to be tentative and say you're not certain about various things?". Sheenaugh Pugh replied "If I don't get what is going on, I will say so. Folk can think me incompetent if they like --- What people think of the reviewer is not in the end the point". I tend to follow the Pugh approach. I know that some people feel that poetry's under threat and that poets should stick together. I also know people who think that the world of reviews is ridden with mutual back-slapping, with inhibition, and that only 20 or so poetry books per year are worth publishing. I think I'm somewhere in between.
I used to keep these notes to myself, but a decade or so ago I decided that given it's just as easy to put the stuff online as on paper, I might as well do so. Of course I could play safe. In a few months even I might not agree with what I've written. I note that Rob's most recent blog entry begins "I've badly misjudged WS Merwin. I'd read only a few poems by him, mainly written in the last decade or so, and these hadn't done anything for me". Yep. I know the feeling. I sometimes go back and change write-ups.
For self-education and calibration I allot a proportion of my reading time to authors I've not heard of before, or whose work I haven't previously liked. There are famous, highly regarded writers whose work I just don't get. I have blindspots both known to me and unknown. I'm not the only one ("You know I can't stand Shakespeare's plays, but yours are even worse" - Tolstoy to Chekhov; "Larkin had no literary talent ... Larkin never managed to write a good poem" - Andrew Duncan). It's not unusual, finishing a write-up, for me to have wanted it to come out differently, but there we are. If I read that Prynne's the most important living British Poet it doesn't make me like his work any more (though I might be encouraged to read his work again, and expose my incomprehension again).
As I read, I jot notes on a bookmark. I'm not trying to follow standard templates for reviews, or guidelines like "mention 2 things you like for each thing you don't"; "if you can't say something nice, don't say anything at all"; "write it as if it were a Reference for someone who might be shown the Reference, encoding all adverse comment"; "end with a judgment and an incitement to buy". I'm not even trying to be balanced - I link to other reviews whenever I can. If I gain an impression that's falsifiable (say, that an anthology has more male poets than female ones) I tend to do a count rather than trust myself. Once I go to the bother of doing a count I feel I might as well add it to the write-up. I don't think authors should have anything to fear from stats.
It's not a style that I'd recommend everyone to follow (especially in paper publications - my suggestions for those who want to be published are on Writing Book Reviews). My stuff's a side-show, a marginal voice - or at least it should be. What I would like is for many more people to write up their impressions - not just of the books by friends or by their favourite authors, but all the poetry books they read.