People ask this question a lot.
Most of them ask this out of fear because they find the idea of spending hours in front of the computer petrifying…
The question is NOT, “How many hours should I spend…?” but rather,
“How should I effectively spend my time online?”
To set the record straight, the key to building a successful online business is directly related to your level of passion.
A person who is truly passionate about spending his time online will no doubt achieve success much easier compared to a person who grudgingly drags himself in front of the computer and does the bare minimum.
There are many business models on the Internet that will work well for your passion. You can blog about your favorite hobbies all day and people will be able to see your passion.
But, if you really want a rough number, it really depends on your aptitude. If you love to surf the Internet and you are fairly competent with computers, you can get by with 3-4 hours a day (assuming you use your time productively).
If you are not technically savvy, you might have to work twice as hard (but with the right attitude, you can outsource most of the tasks and be the ‘brain’ rather than the ‘hands’).
In the end – does it really matter how much time you spend online if you're enjoying yourself AND you're making money?