Be sure to register every conceivable misspelling of your chosen name. Twiddla, for instance, gets maybe 3% of its traffic at twidla.com, and another few percent from Google searches for "Twiddle".

If you can't read your name over the phone without clarification, pick another one.

ps. I'd vote against going with Yunar. Besides having 7 plausible spellings, it just sounds bad.