I wrote about the Giganews Accelerator when it first came out which was just a bit more than two months ago and have been using it since then to speed up header downloads with my own Giganews account. The Giganews accelerator speeds up header downloads by the factor eight on my connection which is really great.
I always had to wait the longest time to wait until the headers of popular groups were downloaded which took an awfully long time. A great thing is that the Giganews Accelerator is also supporting SSL connections. Giganews released a total of eight new versions of the program since the initial release which is an astounding number if you ask me.