So, accepting all the  incoming friendship requests could work well on Facebook but could not on LinkedIn. Lifestreaming is strictly unrecommended  and it is better to add your website link into your profile only if it provides relevant information about your job and your skills.

Another substantial difference between LinkedIn and others social network is;

Do not join groups for the sake of adding one more group logo on your profile page. Join a group only if it relates to your career or interest and only, only if you can devote time to participate and be a valuable member of that group.

but my favourite recommendation is:

Do not beg for recommendations. If people think you are good they will recommend. If you feel like asking for a recommendation, make sure the person you are asking is a good colleague whose words actually bear some weight when possible employers look at your profile. Don’t have your uncle,aunt,mom and dad leave recommendations for you. We are not in high school.

Come on, who did not  thought this almost one time! I am a good boy, you can check it

Check this video out if you still don’t know LikedIn:

Via Applicant