We've been working on WinCustomize.com to get some added features to make the site more usable, and one of those is tags in the upload screen. Keywords aren't exactly new here, but we've been working on the functionality of them and now they will really improve the search process on the site. For example, put 4K in the search box. You will now get a much better search result than before.
This is still a work in progress, but we wanted to let our skinners know that this is something to pay attention to now when uploading and updating skins. If you currently have skins on the site, you can also update them to include new tags and we encourage skinners to do so.
There's still much more to do and I'll be sure to keep you updated on the process. Also a big thanks to Pat for his hard work on the site, and if you have any related suggestions about tags please leave a comment.