This forum doesn't look nice when empty. Thought I'll start...
Talking of Evernote, I came to realize how useful this service is very recently when it proved it's worth in my exam preparations, apart from the fact that it's free(for most users).
The interface is very neatly done allowing you to view your notes in thumbnail view or detail view. It can handle multiple notebooks(new notebooks creation within the app is not supported for reasons unknown to me...). New notebooks need to be made in the web version through any browser.
The notebooks section neatly stacks the notebooks and tapping them takes you to the notebook. The notes can also be organised by tags(multiple tags can be assigned to each note and multiple notes from different notebooks can share the same tag too for easy management) allowing you to refer notes on a particular topic all displayed together.
Besides, if you allow location access, you can sort notes by location of their making too. So office , home, and client place documents can be sorted in a jiffy(irrespective of which notebooks you place them in)
Coming to note creation, notes can include audio,video,text can all be added to your notes at the touch of their respective icons. Notes can be added or modified at anytime(keeping the 60mb/month bandwidth limitations for free users, 1gb/month for premium users). Beleive it or not, 60mb per month is plenty unless you use a 'lot' of videos, audio or images. Evernote doesn't limit you by storage or number of notes(like OneNote mobile version apps do), only the bandwidth you use, which is automatically reset a month later. You can check your usage by tapping on settings icon. Comes complete with a neat progress bar too so you can just glance at how far you're into your usage.
You can even email the notes to yourself from any email capable device to an email address that Evernote provides you. with certain apps that support the feature, you can 'clip' certain parts of the page(or the whole page), with all it's images and text as a note into your Evernote account.
Although there's sooo much more left worth mentioning about this app, but since this is supposed to be a 'small' review(and I've long exceeded that term), I'll end it here for now, but am open to questions(and probably a part2 of this small review to cover the remaining features) Get Evernote Here
Note: Evernote is available for iPhone also. PS: I'll add screenshots a while later.