If the first thing you require is a login, I'll instantly bounce. All I have to go on is an annoying animation and a claim that you create a professional looking CV.
My instant reaction was simply to close it and move on, but I thought I'd at least come here to tell you why.
I've upvoted the submission because I want to encourage others to provide their opinions, which might be different from mine.
Added in edit: And I use neither Google+ nor LinkedIn, so I couldn't sign in anyway.
Massive kudos in getting something up, running, and available for people to use - I'm sure you'll learn a lot. One thing you'll learn is that the core product is about 10% of the whole experience.
As others have mentioned, if you take it down you should have a place-holder so that people know it will be back, and so it doesn't overly hurt your search engine rankings.
My instant reaction was simply to close it and move on, but I thought I'd at least come here to tell you why.
I've upvoted the submission because I want to encourage others to provide their opinions, which might be different from mine.
Added in edit: And I use neither Google+ nor LinkedIn, so I couldn't sign in anyway.