I found an pretty old thread, yet extremely useful and i say that it's a must have. Here it is: http://forum.xda-developers.com/show....php?t=1620255 .
We can make nandroid backups without booting into recovery and it's so awesome in my opinion.
As in it's thread is mentioned: "This tool, eventhough called "Online Nandroid", does not upload/save backups to any online/cloud services. Online here means that it does backup while phone is live or still running Android.".
Also, read this post: http://forum.xda-developers.com/show...74&postcount=5 .
And with Tasker app, it can be way more useful. Right now I'm thinking to make an tasker profile which will backup my phone using this nandroid script after 9:30 pm ( i won't use the phone at that time) every two weeks. This way, i won't care anymore about bootloop !!!
For people which are interesting to use it with tasker, i found this: http://forum.xda-developers.com/show...6324&nocache=1 .You can adapt it to your needs.