Hello Kelly
I think a LinkedIn profile would help but to what extent I'm not sure. It probably depends upon the industry you are in.
Have a look at the following article
blog.linkedin.com/blog/2007/07/ten-ways-to-use
(I can't add URL's to posts so you'll have to add the start and html end bits)
It suggest, amongst other things
- adding a link to your LinkedIn profile in your email signature - which I hadn't though of doing
- adding links to/from from your website / blog - you get backlinks which help with search engine ranking
You can also search for ..
- people in your industry to see where they are working
- lookup companies you want to work for or approach
- see if the person who is interviewing you is listed - this could give you an edge.
From your profile you get to see how many times you've come up in searches and how many times you've been viewed.
There is also a question facility where you could ask or answer questions to increase your visibility and credaibility.
I feel it's worth a go, certainly shouldn't do any harm and you never know.
It's another backlink to your website so it's got be worth it for that alone.
If you do create a profile and don't know anyone to network with (I'll happily join your network if you wish), try joining one of the 'LI-on' groups (LinkedIn Open Networking) who will not refuse any application to network - you have to be careful who you approach on LinkedIn as you can get banned for spamming.
Good luck!