solutions looks like a meaningless tag, which could be applied to every single question on the site; why would the person asking a question not want a solution?
I propose burnination with extreme prejudice.
Following Bart's comment, came up with the following:
Where solutions is used with respect to Visual Studio, it should be re-tagged as solution, which has a tag wiki inidicating it's about VS Solution files.
solution-files, solution-folders, and solution-structure should also probably be retagged to solution
typical-solutions and preferred-solution look like complete junk.