My Name Is Zytherys

Zytherys is a normal girl, living alone. This starts to change when a journal shows up on her doorstep. Before long, she's having problems with her computer (and later, camera), suffering from a compulsion to film herself constantly, and co-workers comment about an unnervingly tall man who seems to vanish before they can speak to him.

Tropes used in My Name Is Zytherys include:

Apocalyptic Log: One possible explanation for the journal filling itself with Zyth's handwriting...
Don't Go in The Woods: So far the only appearance of The Slender Man has been a "blink and you'll miss it" moment in the woods.
Genre Savvy: "Something I never should have found." She may not have realized it immediately, but it certainly seems like she picked up on the fact that the journal seems to be a Tome of Eldritch Lore fairly quick.
Humanoid Abomination: Assuming the creepy guy mentioned by her co-workers and briefly spotted in the "Found Footage" clip is the Slender Man.
Interface Screw: In-universe, with the Oh Crap incident.
Oh Crap: Zyth first seems to realize something is seriously wrong when her computer starts scrolling on it's own... despite attempts to shut it off.
Rule 34/Creator Reactions: We've only seen Zyth's face once, briefly. Since she doesn't actually make mention of her sex (and Zyth being a bit Pettanko), a good number of the fans assumed the blog was run by a male. After reading a slash fic running on this assumption, she bemusedly commented in a PM that she wasn't aware she was so well-endowed.
Schedule Slip: After car and camera issues, the blog has been on a bit of a hiatus. It appears to be picking back up, though.