No doubt,that ultramegabit is one of the best service available at the moment.
Only two things makes your filehost ranked in the second half of the top 10 filehost list.
1.Your site is not allowed on the most used 3x forum
2.The files of free users get removed very fast,even if they getting downloads.This is a big problem,because the uploaders are here to earn you money,not to finance your bussiness.
This is my example:
I have uploaded about 30gb data,and after two months i have.
k2s 26.4 gb
ultramegabit 2.84 gb
This is a big difference!
Its not hard to run a filehost,without upgrading your system.The only thing you need is always delete old files to have space for new uploads.If you change this things,your filehost will fly on the top of this industry.