That Can Be My Next Tweet App Reviews

Doesnt work, just says error. Waste of money

I just got this app and it seems to work decently for most twitter names, but twitter names like mine that include an underscore, or "_", only get "error" as a result. Please fix this, the concept and potential of this app is too good to waste.

If Apple sees all these reviews that it doesnt work, why havent they taken it down?