By levelling up you gradually can choose between a variety of emblems and titles. Even after having reached your first prestige, you can receive new titles / emblems - possibly at a lower rate.
It is also a possibility to receive titles and emblems when you fulfill a certain task, for example killing 300x when using the 'Sleight of Hand' perk.
For more information, please visit the following websites:
http://callofduty.wikia.com/wiki/Callsigns/Modern_Warfare_2_Titles
http://callofduty.wikia.com/wiki/Callsigns/Modern_Warfare_2_Emblems
I hope your question has been answered!
-Neejan
http://callofduty.wikia.com/wiki/Callsigns
Yes you lose everything but titles and emblems
By getting into a tenth prestige lobby.
no. for prestiging you only unlock new titles/emblems extra custom classes and a new symbol.
From prestiging in modern warfare 2 u get an extra custom class and new emblems and titles.
Sorry I'm not sure what you mean but spectre refers to the ac-130. You can get different spectre titles and emblems if you want...
Well, it depends. You only get titles and emblems if you do certain things. For example, you use stopping power a lot. Finally you get the emblem for it. You could just get a few emblems and still be a level 70. It depends on what you do.
Nope - just another class addition, challenges and titles/emblems.
if u have ps3 add ownupwnu69 for mw2
Complete "Think Fast Stun" challenge.All of the titles and emblems can be found here http://callofduty.wikia.com/wiki/Callsigns thx.
They can be found at the Call of Duty wikia. A link has been added under related links
No you don't lose your emblems and titles