The complexities of scaling Twitter have been pretty thoroughly discussed elsewhere, both by Twitter staff and informed third parties. At this point in time, I

The complexities of scaling Twitter have been pretty thoroughly discussed elsewhere, both by Twitter staff and informed third parties. At this point in time, I don't really want to comment any further on what issues they may or may not be having. I haven't worked there in over a couple months, and I'll bet that big parts of the system have changed in that time. I'm no longer informed about what's under the hood at Twitter, and I also don't want to second-guess my former coworkers, who I'm sure are doing their best. Sorry!