I mean really old piece-o-sh*t puters, like they should pay You money to take such crap. As long as it has at least 64 megs of RAM. Or just take the HDDs from them if the rest of the machine is too slow. Depends on what kind of router you need and what bandwidth it will handle, how many users, what kind of services, etc. Old PCs are maybe useful for the SOHO segment (that someone here have said isn't what MT is for..., yes MT is too poerful and hard to deal with...) Actually the idea of using garbage hardware for routers is so good.. One may even use other soft that doesn't have the RAM and HD requirement like MT has. Boot and use it from floppy etc..
MT developers, why not modify RouterOS to be able to do a "stripped" install on a floppy and lower the memory req's to lets say.. 8megs of ram? if some functions are completely removed ?
I think it's worth it because one can get such puters for almost nothing these days. And they have a lot of life left in them. They could serve human kind long time before recycled, etc.
Some of them are very high quality. They don't make them like that now. Of course some of them are expected to fail sooner than if you would use new puters. Then we would quickly replace these with others like 'em...
Or here's an idea for the free space if you put in a 40G HD: Turn on the ftp srvice and connect it to a network server that is near in the network (has low cost high speed to the router). The server could use the storage for lets say backups or some additional content that it's serving... Use your imagination.
It would be nice if MT could run a proper http server. In this case the router with big HD could be used to be the server in the network... no need for additional server....