SUMMARY, in response to a comment by @Arjan, to make my point clearer...
Please can I have clarification on whether I should make a comments on questions regarding the low acceptance rate of the OP?
I have done so in the past (always politely - I believe - and with linked references), but have had some of them deleted - however, I have also seen the same style comments made by a moderator, which has confused me as to the "rules" regarding such comments.
(Updated due to "abuse of code tags" - sorry @Arjan!)
I entered something like the following comment against this question yesterday (I don't have the original, for reasons I will explain)...
Also you could do with sorting out your acceptance rate (33% at the time of writing). People are more likely to respond if they think they are likely to get something in return (i.e. reputation)
It was deleted within a matter of minutes without any warning or explanation. I had a look in meta, and found this post which says:
Accept rate dunning is not considered appropriate. Some of us routinely flag all such comments, and if enough of us do so, they get removed.
I don't believe my comment was rude or inappropriate - although I fully accept that the tone of the written word is exceedingly difficult to "read", so other might see it that way.
Please improve your accept rate by accepting answers to your questions. See meta.stackoverflow.com/a/5235/147015 for further information.
While I've been writing this, the comment has now been deleted (I presume by ThiefMaster) as the original acceptance rate of 17% has now gone up to 67%. I can only presume as a result of the comment by Thiefmaster.
So can I please ask what the "rules" are on pointing out the acceptance rate?