It's both. I was actually wondering whether I should put it in the Complaints section or the review section.
I settled for the mini-review section because for most people, the title itself is as clear cut a review as you would need.
It's like if a certain browser doesn't contain add-ons. For many people, that in itself is the review.
In fact, it's inaccurate to even say it's a complaint for a feature at this point.
Google Reader is so entrenched in online RSS reading that making a full blown review would be near pointless.
Users already know what Google Reader is and people looking for a specific online RSS Reader would head to Google Reader first because the rest of the competition has died out.