I have always believed that LinkedIn, being a gloridied Resume hosting site, is more useful to recruiters than the average professional, and this list of most connected words on LinkedIn sort of prove me right - it is full of recruiter-related words. However, there are some words in the top 20 most connected words list that will give you an idea of what people are looking for. Here's the list (the notes inside brackets are mine):

recuiters
networker
lion (huh?)
monetization (recruiters are always looking for people who show employers 'the money')
connector
salespeople (sales is king, even online)
recuiter
recruiting
candidates
businessweek
webinars
VCs
seekers
early-stage
bestselling (if you have written a best selling ebook, you have made it)
recruitment
angel
staffing
cmo
placements