Urk I just realized I forgot to reply to any of these lately. Sorry about that, I've been reading them but I'm finishing another project at the moment and get distracted easily. I'm going to set this topic to notify me some how so I don't accidentally neglect your posts.
1: Any plans in the future to encourage more newcomers to the site/promote activity?
We're pretty much always running competitions with actual cash prizes here, so I think there's a pretty strong draw for that. In terms of making the community appealing so people wont sign up just for the competitions and actually want to stay, we're working on a couple of things, both additions to the site and changes behind the scenes that should hopefully stimulate activity around here over the coming months. I don't want to be too specific yet since we're still in the planning stages but you'll know it when you see it and I'll definitely make an official announcement when the time comes.
2: Kinda in a similar vein, but any way to change up the site a tad so that the most recent active threads from a few select forums, (Say for example, Official Stickpage competitions, Community projects, and Battlezone), can get highlighted?
I like this idea as long as it doesn't replace the existing front page. Maybe I would tweak it to be used to promote certain threads within the forums or something, just so people had a better idea of cool things going on that may not otherwise check them out. Cool idea!
While we're on the roc of the "show more" button - I dunno if it's just me, but it doesn't seem to actually show more. Looks like it's revealing the content but the size of the post's boundaries stay the same, so the revealed content gets cut off anyway.
What browser are you using and does it have any extensions like noscript running? I tested it on all major browser before putting it in but it uses some JS and HTML techniques that aren't supported the same way across all browsers so there could be a case where it will fail.
By the by, would it be okay if we were at least privy to what's going to happen or what's to come to SP as a whole? Like, what's the focus right now aside from the competitions and the new anims coming from those competitions. What's the longterm plan?
Oh I'm not trying to hide anything lol, you guys will be updated when we've got a solid plan but right now we're still in those planning stages so there's really nothing to tell you guys since we don't know for sure ourselves yet. We have a few obvious plans that I'm sure none of you would be surprised to hear like we want to build a portal and expand the site, but the specifics of that haven't been set in Stone yet. Don't worry about transparency, I'm a pretty big advocate of that and will let you guys know as much as possible.
I've been seeing spam threads that doesn't have any content in it. I can't even find the report button.
An example would be:

Source:
http://forums.stickpage.com/showthread.php?93157-After-weeks-of-dramatic-testimony
Hm I'm going to look in to this, it might be a bug since those threads I believe should be set to Moderated because they are classified as spam by our anti-spam system. You shouldn't be seeing the topic if the contents are hidden like that in our system. I'll figure it out in any case. Thanks for pointing this out.