The next time you buy a car have a look at the specification list. There will be more TLAs (three-letteracronyms) than you can shake a stick at. Some might even make the car go better so bear that in mind when you're buying one.
As for Facebook and TXT SPK, well, OMG my BFF is OTT with ATS and all I can say is WTF? LOL is SO yesterday people (SYP). Why have so many acronyms crept into ubiquitous use and at whom or at what can we point the finger (PTF)?
According to an intense five minute Google search, abbreviated inscriptions have been found on ancient coins and Greek vases but acronyms don't have a particularly long pedigree. The increased use of this kind of bureaucratese can largely be blamed on the pointy heads of scientists and the flat helmets of American soldiers.
Jons Jacob Berzelius invented the one and two-letter system for chemical elements in 1813 and physicists thrived on acronymic insights like E=MC². That 19th century trickle of acronyms turned into a deluge with World War I - the most famous of which was AWOL - and by 1933, FDR became the first president to be universally recognized by his initials alone. It could also be said the FBI and CIA became the first government agencies to adopt initials as mainstream nomenclatures.
Still in America and it became trendy to shorten the word 'company' to CO and incorporate it into the title. Texas Oil Company as Texaco is an example. Today, some companies prefer not to be known by their full names to shed a negative connotation. Kentucky Fried Chicken is now officially KFC which gives rise to that other tendency - to translate an initial into another meaning. Think F for Fat.