Taint mode makes your script as safe as possible because it makes you more paranoid about the data coming into your script. You should still put taint on your TO DO list, but you should be okay without it. This is, of course, assuming that you aren't making any system calls in your scripts (using backticks, system, exec, or any of the other means of calling an external file).

Unfortunately, I couldn't find any good nodes on taint mode here, but I'll try and look some more. I did find the following:

• Taint Mode

--PotPieMan