[Phanx]

The right way to go about launching a new addon site is to post an announcement on other, established addon sites where authors are already publishing their addons. Explain what's good about your site, and why authors should bother uploading their addons there. Authors who are willing to add another point of distribution to their network will upload their addons to your site. Others won't, and that's just how it is.

What you're doing -- rehosting addons without their authors' consent or knowledge -- is the wrong way. What you're doing is unethical at best, and illegal at worst. Even for addons that are under open source licenses, you're not doing their authors any favors by rehosting those addons without contacting the authors first; Seerah already did a great job of explaining why.

There are some authors who only post their addons on Curse -- yet you don't see WoWInterface scraping those addons from Curse and rehosting them on WoWInterface, because that would be shady and scummy and (in many cases) illegal. Likewise, there are some authors who only post their addons on WoWInterface, and Curse doesn't scrape and rehost those addons.

Personally, I'm just not interested in adding another point of distribution for my addons. I'd already removed them from ui.worldofwar.net and wowguru.com long before those sites shut down, simply because it was too much work keeping everything updated in that many places. It's enough work posting updates and providing support for several dozen addons on two sites, and I suspect most other addon authors feel the same way.

You'd have to offer something really, really, really awesome to get me to even consider dealing with another site -- especially after your first move was to rip off my addons and post them on your site without crediting me or linking to any official download/support pages -- and based on the look of your site (very basic, clearly not the work of professional designers) I just don't think your team has the resources to offer monetary incentives (eg. Curse author rewards) or advanced features (eg. GitHub-quality code viewing, issue tracking). If all I wanted from a distribution site was the ability to upload a ZIP file and type a description, there are literally thousands of file-sharing sites where I could do that. Why should I bother with yours?