Since then, I got more and more fed up with Twitterfeed. In theory, it ought to check my links twice an hour, but often it would leave three to four hours between updates, which meant that my links sometimes got posted at 3am when nobody was around to see them.
I was starting to think about writing a Twitterfeed replacement myself, when I discovered Twibble, and it’s much better.
It has many more options — for instance you can specify posting times so that it doesn’t tweet anything during the night, and it can check for new links much more frequently.
There are a couple of minor flaws — for instance, the posting times have to be specified in PST — but it’s nothing you can’t live with.
The main problem is that Twibble isn’t totally stable yet: It has stopped posting twice since I started using it, but the support team is normally really responsive and helpful (during California daytime).
I would definitely recommend Delicious + Twibble as the best solution for tweeting your bookmarks at the moment.