I tried Sendgb.com for big file transfer... It's good option for send large files... you can send files up to 5 GB. No needed registration. You can keep files up to 90 days. It's free file transfer service.
It's not working properly :( I could not send 4 GB file. I waited 2 hours and it was not success. So i could not suggest this site if you need send big file.