Are 5 or more of them the same or pointing to the same link or page? If so, you’re doing the internet’s version of “Mommy. Mommy. Momma. MOM. MOOOOM! Ma. Mother. Madre.” It’s annoying in real life and it’s annoying on the web. Diversify your content. Don’t spam your timeline with the same link 10 times in a row. No one will click it.
It’s like yelling your phone number in a room. The first time you yell, people will write it down. The 2nd time, the people who missed it the first time will say “oh yea!” If they hear it the 5th time in 2 minutes, they will block it out.
Try to space out link drops of the same content by a couple of hours on Twitter.