Q:

Does one need a permit for personal photography in Tel Aviv Yafo? 

I was looking though some websites and came across permit requirements on Tel Aviv Municipality site and Filming in the Tel Aviv site.  These sites mention that permits may be needed for photography in the city.   I am not sure if this applies only to people producing commercial works or if it also applies to general tourists. 
Will I need a permit for

Personal or family photography? 
Art pictures that I take as a non-professional photographer / Hobbyist and make no financial gains from it (flickr and 500px type)? 
Art pictures that I take as a non-professional photographer / Hobbyist and make some financial gains from it (sell in 500px
market)? 

A:

Generally speaking the permits are required for professional photographers and film crews that could block parts of public walkways streets and walkways for an extended period of time. 
When it comes to personal photography there is no permit required, so if you do not intend to set up a large tripod and have it sit on the sidewalk for 1-2 hours while you take pictures you don't need one. 
If you look at the bottom of the Tel-Aviv Government page and the application itself it becomes clearer what the permits might be required for and how they are granted.   The minimum duration of the photoshoot is up to 6 hours. 

Daily production for six hours or less - 90 NIS (minimal fee). 

And you will need it if you intend to have control over the area you're shooting at.   So if you don't need that take pictures as much as you like.   Tel-Aviv is an interesting city to visit. 
FURTHER
To add to this Biblical Productions has a more concise list of situations that necessitate obtaining a permit. 
Additional info
The Hebrew version of the page clarifies that the permits are required if the photographs are taken for commercial purpose such as advertising.   If such a shoot closes fully or partially a public space or if the shoot is of the public buildings such as town hall and so on.