% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for what some users use

AnswerClue
PCSWhat some users use
LOGONUse a user ID
PAYPALWhat an eBay user might use to transfer funds
TIMESHARINGAllowance of multiple computer users to use a program simultaneously
MOMTESTTrial making sure that the least tech-savvy users can use a tech product
IMGURPicture-hosting website much-used by Reddit users
APPLESNOBTech user who will only use Macs
STICKIESApple user's app that uses windows resembling Post-it notes
OMGOSHInternet expression of surprise in which its user wants to make it abundantly clear that they aren't using the Lord's name in vain