wswrwb to abbreviate or not to abbreviate that is the question

Umm Hamza that paragon of Islam Chat thinks its okay to abbreviate the traditional Islamic greeting to a series of letters, when someone questions her about it Khanny aka the Professor backs her up by telling the questioner to" shut up".

The full Islamic greeting is  is Assalamu Alilkum Wa Rahmatulah Wa Barakatuh meaning peace, mercy, and blessings be upon from Allah (S.W.T.). This is because Imams Abu-Dawood and At-Termithi reported in a good hadith that a man came to the prophet (S.A.W.) and said, "Assalamu Alikum." The prophet responded and the man sat down. The prophet said, "Ten rewards." Another man came and said, "Assalamu Alikum Wa Rahmatullh." The prophet responded and the man sat down. The prophet said, "twenty rewards."

This situation reminds me of an ayat in Sura Ar Rahman-13. Fabi-ayyi ala-i rabbikuma tukaththibani/13. Then which of the Blessings of your Lord will you both (jinns and men) deny?