The biggest mistake people make is making their profile all about them. With a few tweaks, you will draw more people to you because your expertise is what they want and need.
The free search engine on LinkedIn is so much more robust than people think. Finding the right people to connect with on LinkedIn could be business changing.
You can share meaningful content on a daily basis without constantly being on LinkedIn. More importantly, ensure you're sharing the right content to get those connections interested in YOU.