If the question is more than 30 days old, and ...
has -1 or lower score has no answers is not locked
... it will be automatically deleted.
I have downvoted some 30-odd questions that are quite old (more than 3 months or so), have no votes, no answers and not closed as of now in the past hour or so in Ask Ubuntu. I have used my discretion to downvote questions that I consider are poor and are possibly abandoned given that the OP has less than 5 rep and have been that way for more than a good couple of months.
If not for the downvote, most of the questions have a good chance of getting pruned by the other year script but I wanted to speed up the process of them getting deleted.
I was wondering if this is okay to do since I have invariably ensured that the questions are deleted if no upvotes are cast on the question in the next week or so. And, I don't have a delete vote privilege nor did I consult anyone before doing this.
After spending my daily voting allowances, I am wondering if I am taking advantage of the script to delete questions just to momentarily boost the site's answer rate. Is this downvoting sprint of mine particularly alright or would it be considered abuse?
I also think this would be a good place to discuss the consequences of having this script in the first place. If necessary, I can list the questions that I downvoted for reference and for discussion.
(I used this search to pick out the questions: http://askubuntu.com/search?tab=votes&pagesize=50&page=40&q=answers%3a0%20votes%3a0%20closed%3a0)