100%. There is no point having a rating / review system if customers can't trust it to help make decisions. If an old review is faulty because the software has

100%. There is no point having a rating / review system if customers can't trust it to help make decisions. If an old review is faulty because the software has changed, the vendor should be able to reply. That helps the customer know a) the review is out of date and b) the vendor is responsive. On a related note, why don't most app marketplaces show the number of ratings next to the rating? It's disconcerting to see a 1 rating 5 star app next to a 100 rating 4 star app.