On twitter, Tim O'Reilly posts a daily (or almost daily) $9.99 deal of the day.

http://twitter.com/timoreilly

He happens to link to stuff that interests me, so I'm happy following him, and there's the bonus of a cheap read every now and again.

The ebook deal of the day offers have a dedicated RSS feed:

http://feeds.feedburner.com/oreilly/ebookdealoftheday

P.S. Sometimes it appears they don't cut off right at midnight. Weekends would be one example of this, but also on weekdays.

I've yet to see one of their "heavy hitter" titles offered, though. But I haven't been following the feed regularly.

Which ones of those would be worth buying?

The one you're actually going to read.

P.S. They have this "sale" once a month and the iPhone version of these books is also half the price.

(O'Reilly also provides instructions on how to get to the actual "book" out of the iPhone app:

http://oreilly.com/ebooks/oreilly_iphone_tips.csp Check "Extracting the EPUB pearl.")

It still amazes me that Amazon bought Stanza (which powers O'Reilly books on iOS). Stanza's still going strong though.

http://ireaderreview.com/2009/04/27/kindle-vs-stanza-amazon-...

Thanks for the tip!

I picked up the JQuery and CSS cookbooks. The CSS one really looked sharp and any solid guide on JQuery is a must have for web developers.

I keep getting suckered with these $9.99 deals. What are you doing to me, O'Reilly?!

Or for $20/month (10 books/month) or $40/month (unlimited books/month) you could get a safari.oreilly.com account with access to every O'Reilly book published (and more).

This is awesome, thanks for posting it ! I purchased three books: JQuery, Web Security Testing and ADO.NET 3.5

Just bought some. Lets see how many of them I will really read...

Hmm. Python Cookbook release date 2005 and 'updated' for v2.4

I think I'll pass.

Argh, but they won't let me buy them because their website is so poorly programmed. Several attempts to checkout just returned to the "enter credit card info" page without an error. Switched to chrome was able to check out only to get "we were unable to save your information, please try again later"... was my credit card charged? who knows.

So irritating.