LinkedIn sends moles to invade your computer and they avoid admitting that they disrespect users.

One your privacy is open on there i know cause i ended up with junk mail from there so. Ill never pay a dime to a place expecting you to push more lies or something off the chain like chris said lack of proper descriptions is a turn off, if you asked that person on job skills only because the system said add this add that basically promoting you to lie to get a job. Im to honest i trained how to interview never lie to get in and if you do better know the skills.

It's probably the same reason why emails are not always opened. Think of it as email, but within a more professional context. Not everyone opens the door when you knock or answers the phone when you call. There's no perfect system. Create a catchy headline, it might work.