I have 150 ebooks on my ereader right now. I usually delete the ebooks which I don't find interesting to read or feel like they are a one time read.

[danoug]

I try to keep a max of a 100 on my Kindle and I delete after reading them. I keep them all in my Caliber files.

[spersephone]

I'm up to 445 at the moment. I've only recently been introduced to the ebook world, just in the last few months. I was stockpiling ebooks for that day in the future when I'd buy a device to read them on. I now have it and won't be looking back!

over 900 and growing, and i've read most of them.

160 by now.

Wow. Honestly, I dropped my jaw when reading your post and you have thousands of books. *bowing*

Currently I only have 305 books and have read over a half of it. I like to collect books and feel satisfied when the number of my books is growing so I only deleted books which I really hate and waste my time.

About 150. I delete them after I read them.

I have about 200 on my smartphone. I keep the majority of my library on my external harddrive, so I save or delete to my phone whenever I want to.

I currently, have 4,599 books on my iPad, which I use as storage for all the eBooks I hoard. It might have been slightly higher if I didn't accidentally wipe everything from my iPad last year. on both of my phones, I only have about 5-10. I delete them after I'm done reading.

[PandaThePanda]

There's about 4 or 5 on mine but me haz a lot on the Pc

about 150 at the moment on the kindle - lets face it we are all hoarders at heart (book-wise that is). i think i need to live until i am about 1000 and even then will not read all the books that i want to read - big sigh.

My Kindle has 520 ebooks of both fanfiction and published works combined.

My Calibre libraries, on the other hand.... probably about 3k+
I keep everything I read on my calibre (except those I find objectionable), but only my favourites in my Kindle

I used to have pages and pages of books on my kindle, but it was very difficult to find anything (I had to use 'search' to find a book quickly). So I deleted all books, added about 300, but all of them are in about 10-15 collections. I keep on adding more books than I manage to read, so the total number is about 500, but I delete the ones I've read.

My total ebook library is Calibre and that stands at around 3.5-4k. My computer gave me recently major scare, so I backed them all up to external drive and a DVD disk. I wish I could remember to do it more frequently

I have a 2k+ collection in calibre but only a quarter of it that I already read. never read using my smartphone cause I still think the display too small.
My collection largely sci-fi and fantasy.

[sleeksheep]

I upload them to my reader in monthly folders and delete the books as I read them.
As a hoarder of all ebooks I usually have a reading folder on the PC that I fill up
with books I must read - but I delete more than I finish as my reading time is
only spent on books that really grab me, suppose theres 600 on it at the moment.....