How do you create your In-Game Name (IGN)?

For me, I think most of the times, gamers find time to create the best IGN that they can name their characters. How do you create them? As much as possible, I do not name it according to my real name. I like it clean cut (no number, in Sentence case) because it looks professional. I also like to use weird names (as in no consonants or no vowels) like Pynsynth. Also, the shorter the name, the better.