Cool Site of the Day – 12/9/10: ReversePhoneLookup.com
A reverse phone number lookup will let you see exactly who it is that was trying to contact you. From there you can decide, whether to open the lines of communication with the caller. Most services charge between $4.95 and $14.95 to do this, and that is for just one search. At ReversePhoneLookup.com you can not only look up numbers as many times as you need but they offer this service completely free of charge.