I’ve just finished moving my blog (and my mail) over to a new server.
For once, the new machine is less powerful than the old.
This blog is now running on an opengate with 512Mb ram and 512Mb of disk (!)
The small install size (systme + data <400Mb) is obtained by using a basic Debian install, and by taking a rm to most of the documentation and things like that.
I might even try to get it down to under 300Mb soon.