What’s special about these and possibly a few other similar phrases?

Cracked by almost everyone!

Some fairly calculated answering also; please to be seeing comments to appreciating peoples creativity.

Aparna, Ps, priyananda, nisha’s thambi, p vs np, Raghuvansh, udupendra, BASAB, sidsen, Kaiser Soze, alephnull, mach101, Nakul, Atul Mathew, SGK, duriel, shrik, username, Ananth and Kal