TypePad, a hosted version of Six Apart’s Movable Type blogging software, has been a major beneficiary of the blogging boom. But that growth has brought challenges, and TypePad has experienced significant performance problems in recent months as its has outgrown its existing space and begun a transition to a new data center. Six Apart has issued a series of apologies for the poor performance, which has drawn complaints from business bloggers using TypePad.

TypePad isn’t the only blog-related service being strained by recent growth. The web-based RSS reader Bloglines has also struggled with poor performance in recent months. “We’re not going to beat around the bush about this. Bloglines performance has sucked eggs lately,” the staff noted in a message to users. “In short, Bloglines has been busting at the seams like the Incredible Hulk. All of us here at Bloglines have been foregoing sleep and social lives over the past several months to keep Bloglines running and preparing for our move to a new access center.”