The question is unclear. If you meant, "Who founded Yahoo?" then it was Jerry Yang & David Filo.
Any age.
No there Is no certain age but below 7 cannot use yahoo as they cant operate it...
There is no age. You can be any age you want.
You can ask or answer questions at yahoo answers at any age,but Yahoo Answers says that you need to be 13 to create a yahoo answers account,same for Facebook,Wiki Answers and many other sites.
13
Yes you do, And you must be at least 13 to use it. (You can be any age for a Yahoo Account)
Any age over 8
No age limit.
you can be any age
over 13
I'm guessing you meant, "When did Yahoo start operations?" as opposed to "When was Yahoo founded?" Yahoo began in January 1994 as "David and Jerry's Guide to the World Wide Web". The name was changed to Yahoo in April 1994 and the yahoo.com domain was created on January 18, 1995. So Yahoo was founded in January 1994, but, started operations under the Yahoo name and the yahoo.com domain on January 18, 1995.