Suspicious: Many NullOne hacker service exist
SCAM: Santa claus doesn't exist, nor coins multipliers
SCAM: Known scam site
Files are stored indefinitely, 20MB limit
Private dropbox service accepts arbitrary files up to 20 Mb. Files are encrypted with gpg, the user gets a link to retrieve the file and a link to delete the file. No cp, no spam.
SCAM: Santa claus doesnt exist
Opensource bitcoin wallet - Seems safe but it's always better to use hardware wallets instead of online ones