I had a VERY GOOD experience over all with online dating.
I met my wonderful husband on Match.com 6 years ago.
That's not to say I didn't meet some creeps.
My opinion is: if you are the type of person that's 'been around the block' a couple times, ( I am)and you're honest with yourself & the people you interact with; and why not. what do you have to lose.. and of course be careful, there are creeps out there.. I think it can be a good experience. online dating is great for getting you exposed to the biggest possible group of people so you have the chance to 'find someone'
Good luck!