The 'about' section might just be the only part of your profile that gets read. Make it count...
The pivotal part of your LinkedIn Profile is the summary or 'about' section. It needs to be there. It may be the only part of your profile visitors read.
Don't omit it: You are more than just the summary of your job experience, so tell us your story here, above everything else on your profile. Give us your elevator pitch.
Use the first 220-230 characters or so creatively, because that's what people will see BEFORE they trouble to click on 'See more'.
A snappy summary opening can also make the difference as to whether visitors even bother to click, or read any further. If you don't grab their attention, they may simply not bother.
Your profile summary needs to tell the reader a concise story of you.
Write in the first person singular - "I". Don't use the third person "David Petherick makes you visible, legible..." - it's anachronistic and pompous.
You are having a virtual conversation with someone one to one. Talk normally, and don't stuff your about section with cliches and jargon.
And remember you can also add media - slideshare presentations, PDF Documents, SoundCloud files, links to websites, landing pages or downloadable web resources. Use it.