Is it kosher to post twice in one day?

So 2 days ago, I finally did it; I signed up on Pinterest.  You know, it was a little anti-climactic though... I don't even know how to 'pin' things to my board. I sat there for a good 10-15 minutes looking at others' pictures. Saw some that I liked.  Saw the button to 'pin' it to my board, but I don't want to pin other people's pictures to my board.  So then I gave up, hah. I think my original intention of signing up was so that I could find some recipes for my new novel idea of compiling a "When I was at college" cookbook.  Eh, it was an experience. The best part is, I have like 5 followers already...I'm not quite sure what's to follow though cause I have a total of 0 pins.