Best websites for ebooks and audiobooks?

Searching for ebooks/epub etc. will bring up lots of results on an usenet search engine such as binsearch - but there are too many to go through! so it is difficult if you just want to browse rather than know what title you want and just search for that

So are there any good websites dedicated to the posts of ebooks/audiobooks on usenet?

also what strategies can be used to find the books I might be interested in?

http://nzb.su/browse?t=7020

thanks

see h**p://filesharingtalk.com/threads/433377-Best-nzb-site-for-ebooks.

thanks