With this answer:

https://superuser.com/questions/448782/get-rid-of-the-courier-font/449815#449815

I would **highly** suggest that you improve upon it by adding more detail.  Whenever you find a program, or link that you feel is useful, put in the time to expound upon the answer instead of just posting a link and saying "This should help".  

That would be a reason why I would personally down-vote a post like yours.  If you find yourself adding content from other sites, add a summary of the steps that need to be performed.  If you're adding a link to a specific product, give a summary of what it does, what it looks like and how to use it.  

Here's are some examples of both product and instructions that I took from another site:

* https://superuser.com/questions/446315/how-to-know-if-your-computer-is-hit-by-a-dnschanger-virus/452356#452356
* https://superuser.com/questions/449550/how-do-i-recover-or-undelete-files-that-i-accidentally-deleted/449551#449551