place=locality is not intended for use in a city. Locality is intended as a place that is named but has no population - not likely in a city.

When you say "displayed on the map", I expect you mean the Mapnik map on the OSM website. This is just one example of a map derived from OSM data. You can render your own map with different rules so multiple language names appear. There are an increasing number of renderers available, see osm.wiki/Renderer for more details.

If you want parts of a city to have district names the convention seems to be to use place=suburb + name=*, even though this is not what a suburb really is. I would consider adding a node with these tags right next to the crossroads.

The ITO world only shows comparisons of the names from OS Locator and those on the ground. Many of the roads already exist on the OSM database, but the name is different from the OS Locator data. Having a road in the database is very useful, having its name is good too, having all of the extra details around the road that are not mentioned in the OS Locator dataset is what really makes the difference. To me one of the best uses of the OS Locator data is to highlight the newly added stuff in each new version. It shows up the places that need a new survey because something has changed.

@nmixter: Most of Britain has been done by surveying, not from imported data. Imports can put off the other mappers, so bad imports can damage our most precious resource, mappers.

You need to actively support the tile usage policy osm.wiki/Tile_usage_policy

Consider downloading tiles from MapQuest, they provide tiles based on OSM data with a different rendering style.

The OS Street View layer available in OSM seems to be consistently some metres further south than multiple GPS traces. Our OS layers are only as good as the way they were reprojected. Bing alignment however seems to vary from place to place, sometimes very good, sometimes not so good and if there is a discrepancy it varies in direction.

A single GPS trace is not enough to correct alignment. Junctions with multiple crossing GPS tracks seem a good way to align the images. Using OS StreetView buildings for alignment seems very suspect. OS StreetView buildings are simplified and how can you use a GPS to align to a building? If you do manage to walk around the outside edge of a building to gather a GPS trace, the building will give you reflection errors.

ATM Kingston upon Hull has 2 roads that do not now exist but they do in OS Locator. Since nothing exists there to tag, I can't remove them from ITO's list. I don't really care, the real job has been done - OSM is not about comparing with OS data. OS Locator will really help as new roads appear in later releases and that points to new places to survey that we may otherwise have missed for much longer.

Use Potlatch 2, JOSM AND Merkaartor to suit whatever you are trying to do. They all have their strengths. Saving your work is best done as a little and often.

In JOSM you can copy an object (Ctrl+C) and paste it (Ctrl+V) or just paste the tags onto the currently selected object (Shift+Ctrl+V).

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Help is always available, just as. You can contact local mappers, look in the wiki osm.wiki/Beginners%27_guide , ask on IRC irc://irc.oftc.net/osm, join a mailing list osm.wiki/Mailing_lists or use the Help Centre http://help.openstreetmap.org/

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@Palmira:
It's not that people are urged to NOT use OSM, just the opposite, we want everyone to use the DATA. The tile servers are primarily there to support the people who edit the map data. They are not built to withstand use from a very popular app. If you want to use the data to create your own tiles, or pay someone else to host the tiles that is wonderful. If you use the OSM tile servers too much your app will be blocked, your users will be unhappy and you will have a load of work to quickly point your app elsewhere.

You can download the data for Israel from Goefabrik here: http://download.geofabrik.de/osm/asia/israel_and_palestine.osm.pbf

You can then use mkgmap to make a Garmin map. More info here osm.wiki/Mkgmap

Using the telephone directory data is not good. We need to be very careful about our sources of data. If you want to know the street names, why not walk / cycle around and write them down or photograph the signs? That way you will also find all of the extra things that are missing from the imports and anything that has changed since the data was last created. OSM may have Street in its title but it is about so much more than just roads.

If you want to add UK postcodes there is an overlay for the editors to display the postcode centroids, as supplied in the OS Opendata. I need to load the data for areas people are interested in, so drop me a note if you want your area(s) loading. See http://chris-osm.blogspot.com/2011/01/using-gb-postcodes.html

OSM gives me the infrastructure and freedom to map what I'm interested in.

The open tagging allows growth in new areas without being stifled by some committee agreeing the tagging in advance. This leads to diversity without undue penalty.

OSM also allows me to render a map with things on it that I find useful, ignoring other things.

I can make corrections or reflect changes to an area (such as a new building) and see them on a map only a few minutes later.

The same data can be used on a web site, on paper, on a phone or in a GPS.

Empowering? Yes.

You might like to look at the wiki page osm.wiki/GPS_Reviews

You might like to look at the more comprehensive relation:
osm.wiki/Turn_restrictions