After some days lurking around here, I have to say, Stoptazmo surely has one complete list of manga titles. Really has great potential to become a one place for every manga online. The approach to show those manga list out in the front is brilliant, which makes it most easy for lazy people like me .
Along with the last suggestions from creeps , I would want to help with some designing, too (I'm a college student specialized in Media Technology, so I can do some logo or image designing for free as practice.).
As for my opinion about the site, I think I might know just the way to solve your hosting problem while making Stoptazmo a better site for reading free manga. Recently I have bumped into newly hosting service that allows you to generate online reader when you upload your manga there. I have posted a thread about it here. If you decide to implement it into your site, I can design a site like http://www.surfthechannel.com/ for Stoptazmo. I hope that I can contribute some valuable things to help this site grow larger.