Hi Keza,
I feel your pain. I often receive comments that either do not contain any indication that the actual post at hand was read or are so riddled with spelling errors, grammatical errors, and typos that I do not want them on my site. I disapprove them. If there is something salvageable in the comment, you can edit it to fix the errors, which I do.

There is another avenue you might consider. Several of the training modules include adding your posts to discussion threads. You can request comments in exchange for providing comments. This approach tends to have two advantages. It is a one for one exchange which saves time. I also have found that the folks who are submitting posts as part of training have taken more care in creating the article and commenting is a more enjoyable process.

Sometimes things get glossed over due to the volume of mail received here.

You can disapprove low quality comments and they won't get credit.