I am looking for pen pals for my sons; they are seven years old and in first grade. Your son(s) do not need to be twins... two seperate pen pals would actually be more ideal.
Having a pen pal encourages writing and reading skills, it also helps shape your perpesctive of the world around you. Not to mention it teaches patience and the rewards of doing so when you are able to actually open a letter as oppose to an email.
If your son is around my boys ages and you are interested; please let me know so we can set something up. My boys had a pen pal with a distant family member, but the lost interest. They are both very bummed out. I have been trying to find safe pen pal sites today an am having minimal luck.