To Online Date or To Not Online Date?

Earlier this year I was over at my parents house having dinner when my Dad told me that I should consider using Christian Mingle.  I was a little shocked to say the least and thought for a second he was kidding.  He wasn't.  He suggested it for my sister as well.  And well she took his advice, found a nice guy, and now they are practically married.
About 8 months later and about 5 months after my sister joined and met her boyfriend the thought has popped back into my mind.  Should I online date or not?
Now here me out friends.  I am 23 years old so it is not like I am desperately needing to get married so I can have kids before my clock runs out.  But being in grad school and working all the time when and where am I going to meet someone?
There is a part of me that really longs to have someone who loves me and wants to spend time with me.  Life gets a little lonely at night when it's just Brutus and I.  He doesn't exactly have much to add to the conversation.   
But at the same time do I have the time for another person?  Do I have the energy to put into dating someone?  Am I ready to put myself out there?
I don't know.  So this is when I come to you my lovely blog friends.  Have you ever online dated?  How did it go?  Did you like it?  What website did you use?  Do you think I should give it a shot?
I cannot believe I am even entertaining this idea.  I promised one friend I wouldn't even consider online dating till I was 25.  But the loneliness is setting in and I will be graduating next May and I either need to find a husband or a roommate in order to not move back in with my parents.