Nested labels and filter in Gmail efficient way of organizing emails

Today Most of the people in the world uses Gmail than any other mail such as "yahoo or hotmail" because of its simplicity, spam free, corporate like features and elegant un-bloated design and with Google apps anyone with domain can get free 200+ free custom email ids hosted by Google with all the goodness that is available on gmail, but many don't know there is a awesome cool feature called "LABELS" with NESTED LABEL Lab upgrade with which large number of emails can be organized beautifully in a hierarchical way without any Hazel or complication.

I am using google apps standard (free) to host email ids of my website/domain (ceveni.com) and my primary email id was so much filled in that it became a pain to browse through the mails specific related to friends or blogging and of other category then i accidentally came across labels a feature that was long ignored by me, this came handy in organizing my emails efficiently...

so what are labels and what are its features?
labels are more or less like folders but gives an extra advantage of adding more than one category to the individual mail where as in folders each mail is totally added to individual folder..
whats more now label comes with a extra LAB feature as nesting “Nested Labels" just go to GMAIL LABs enable this feature and click save now you will be able to add the child labels to existing hierarchy using slash(/) for example if you have a label with name "Blogging" you can add a child label say "Documents" and "Videos" as shown below

Blogging
Blogging/Documents
Blogging/Documents/Videos

similarly you can create a work label under which you can create other labels such as teamA, teamB etc if you manage multiple teams etc etc... to know more about labels and filter see the below video



and between if any one of you are using gmail Label feature do let us know how effective it is and is it really serving your purpose