Definitely share feedback if you have any ideas how people can more easily ease into the site. Fresh perspectives help.
You might want to follow #devski. It tracks some of our development. #blog.hubski has our general updates.
Btw, when entering a tag on a post, if you put an @ after the tag, it personalizes it. That is, if I add art@, it becomes #art.mk, a tag that only I can use.
Oh, finally you have style options on the settings page in your profile. Dark is the second most popular.