Well, I can't get things shipped to my home, so I have decided to get a private mailbox since it is more convenient for me than a PO box. I am going to get one later today and before I do, I wanted to hear from anyone who has had any experience with these services. Also, I heard these places can open your mail, but I thought they don't have the right to open USPS mail. Thank you all for the help.
Note: It is a mom and pop shop.
I'm sure you sign away your rights for them to be able to open your mail if they want. A mom and pop shop is probably better than a UPS box or something, but I can't say from first hand experience.