It turns out our fears that MVNOs would fall out like flies before finding their footing might be overblown -- for some of 'em, anyway. Want proof? Amp'd Mobile states that it is nearing the 200,000-customer mark after having a pretty strong first quarter to kick off 2007. Just three months ago at the top of the year, Amp'd said that that it had ended 2006 with more than 100,000 customers. One quarter later, the MVNO has apparently almost doubled that number -- impressive indeed. Some highlights: Amp'd gained 87,000 new activations in the first quarter of 2007, with 84% of that being of the postpaid kind. The average revenue per user (ARPU) hovered in the area of $100 per month as well, which is twice the industry average.