It's actually relevant here. For people less familiar with some aspects of Unicode, this is a neat example, along the same lines as the OP. Just don't try to select it!
It's displayed with boxes here, not the actual zalgo text (although I can paste it somewhere and looks correctly there), although my encoding is set to UTF and I can't select single boxes. The whole page kept blinking, but this was another issue (the layout of the comments, when I went over some borders it kept selecting and deselecting the whole page which caused it to blink).
Chrome Windows 7 ends up rendering them all as boxes. The lack of whitespace prevents line breaking. The problem is that it forces the container out to 1400px wide, rather than responding to browser width.
I really don't like trying to read 1400px long lines of text.
Ę̮̱͔͓ͯ͗ͫ̌̏ͫ͌́x̘̤͚̰̫̫̗̤̱̒̓ͨͯ͑̓ͥͫ̕å̰͚̓͒ͫm̛̤͕̫̳̺̩̄̓ͨͥ͜ͅp̰͉͗ͤl̵̖̗̫͍͓͋̍̐͌̐̒e̡̧͔̮̿͒͋̈́͡ ̸͉͔͗͐̍ͩͫ̀ͭz̨͎̱̟̘̓ä́͊̉̾͜͏̺̲̘l̛̥͇͖̹̻̜̈̀̀g̴̗̻͚͙̭͍̩̔̉̆ͦ͌͘oͬ̾͑̉̋҉̢͙̹̹̺̺ ̷̢͖̲͇̺̪̹̙̺̘͐̄ͬ̍͆t̶͔̣̜̟͌̀ͪ̅ͧ̒̒ͫ̚ȅ̠̪̻̄ͫ̋͝xͭ͆͝͏̮͔̜t̟̬̦̣̟͉͈̞̝ͣͫ͞,̡̼̭̘̙̜ͧ̆̀̔ͮ́ͯͯ ̢̮͎̦͙͇ͪͪ̈͌ͬ̄̓̐͞ḷ̹̺̙̜̇̉́͡o̢̻̪̠̬̍͐̉ͮͥ̑͊ͪt̢̘̬͓͕̬́ͪ̽́s̢̜̠̬̘͖̠͕ͫ͗̾͋͒̃͛̚͞ͅ ̝̣̥̳͇͎̭̾̔̀̀̔̽̕o͇ͮ̋̅͋͆̈́̔͗͟f̙̙͕̮̈ͪͯ̿̈͠ ̯͎̺͎̺̃̀͟͟d͍͍̺͂̂i̪̩̙̭̝͖ͥ͂̂̈̒̎r̥̜̃̏̃͋̓ͥ̃̉̄͘͢t̳̦̬͆͂ͬͧ̏ͬ̓y̵̮̗̟ͩ̃̾͐́ͩ ̣͍̘͈̫͓̊ͤ̚͡͝cͥͭ͐̎͆͘̕҉̫̞h̴̢̫̘͉̖ͪͩ̓ͪͯ̑͑̓̎͝a̧̢̖͔̗̬̘̯̟ͪ̐͌̍͂̊r̷̝͓̬͆̄̽̓̋ͬ̈̔͝͠ā̗͑ͬ̀c͒̎͌̔͛͘҉̘͖͖̖̯̖͖͙ṱ̶͇͚͎ͯ͋͢͝eͦ̽͆͏̟̭̠r̙̖͙̳̾ͯ̈̕ṣ͙̈͆̔͗̉ͥ̋̔̕