I saw on another forum a suggestion for blocking unwanted incoming links via .htaccess so that they would return a 403 error. The thinking behind this was that they would perhaps eventually get removed by the site concerned because they wouldn't want broken links, or that Google would eventually de-index them.
I was thinking about using this in cases where I haven't been able to get links removed. I was wondering what the pros and cons would be of doing this, i.e.
Would I actually gain anything, and could it cause me any problems?