Nice article on interstellar cyclers
Paul Gilster discusses my interstellar network over at Centauri Dreams
Centauri Dreams is one of my favourite sites for discussions on the mechanics and romance of interstellar travel. They've just done an article discussing my concept of the interstellar cycler, which I used as the basis for the Cycler Compact civilization in 2002's Permanence.
I've written more extensively about cyclers here, and after Permanence, haven't gone back to the idea for a while. I'm glad other people are still worrying away at the ideas, because as with all proposals for interstellar travel, the devil's in the details. Surprisingly, the more you look at the idea, the easier some aspects of it become; for instance, in the description of the concept over at orbitalvector.com, they elaborate on an idea attributed to Jeremy Totten, whereby cyclers can reproduce slowly by the accumulation of donated resources from waystation stars. There are many variations on the idea, some of which I've explored (eg. if cyclers can reproduce through resource accumulation, they can also be initially built that way), and other people continue to find more.
The big question--for me--is whether I'll ever write another Cycler Compact novel. I hope I can, but that plan suffers from the fact that I am constantly coming up with other new ideas, and the burning need to get those written down means cyclers keep ending up on the bottom of the priority list. But you never know; if inspiration hits, I'll be happy to return to that universe.