I tend to be quite blunt in my comments, but I usually try to provide constructive criticism. Doing suggestions mean I consider the translation good enough to be improved, which is a praise in itself. If you happen to be one of my victims and don't like that, just say so and I will leave you in peace.
On the other hand, there is nothing I like more than discussing a translation. I could happily nitpick about a single line for hours. For all my lack of manners, I value very much the time anyone spends helping me improve my translations.
I can occasionally comment on very poor translations, especially when they are done on request or simply when a wrong title catches my eye.
Unless they are explicitely meant as an educational attempt at learning a language, I consider publishing bad translations a lack of respect for the readers, and I am willing to bruise a few egos for the sake of that respect.
My definition of a bad translation is limited to barely prettified GT outputs and similar gibberish (something that does not even allow to guess the original meaning). On rare occasions I can be more unforgiving, when I consider the original lyrics deserve more than a word salad for translation (lyrics from authors like Brel or Brassens or classic poetry, for instance).
Consistently, I hate to see undeserved ratings, and chucking stars around (on my translations or someone else's) is likely to earn you a vote report (and possibly a good telling off).
Please don't use stars as a means of thanking me for a request. Don't rate my translations unless you are proficient in both languages and in a condition to evaluate them (fairly, as far as that's possible).
Lastly, I tend to add cheeky comments to some of my translations. My favourite targets are crass hip-hop rants and braindead mainstream pop. I am well aware that can be annoying to some. If you don't like a particular translation of mine, just say so and I'll remove it to let another translator do a less opinionated job.
Getting rid of me is quite easy though. I'm lingering here as long as I can happily do my little amateur job, but I have very little patience for Internet whining and squabbling. Being pestered by trolls will soon spoil my fun and get me out of here in no time.