i took idIt*mobi today and its a sound investment for 8.99 in my opinion. (registermatrix)
others like, idik and gidu, may not be. the above-name works for me and my needs. idik and gidu don't. also stay pronouncable (PRON), unless the acronym means something useful (does not normally include MCOA for methodist church of arizona, i mean useful historically). Also, axxx or other icing that applies to .coms will not to LLLL .mobi's in this environment.
i say be creative, look at your bankroll, prioritize, have a strategy before going in looking at the short term and longterm and go for it. Remember, bankroll is defined as something that can be lost and you can still eat and pay the rent.