Don't be that person all over LinkedIn for several months looking for a job and hounding people to help. Then once you find that job, we never hear from you again.
You stop posting, commenting and DM'ing and the kiss of career death is not replying to an email when it's time to cash in that favor chip. At some point you will be looking for a job again so don't ignore the people or platform that helped you along the way.
The point of LinkedIn is for you to build a network and relationships outside of your geographic circle so that you will never need a resume again. Don't be only a taker, be willing to keep investing in relationships no matter how high up you go and help out someone else who needs it as much as you did.
Your career will not be defined by how far you go, rather how far those you help go.