I read before that potato is a duplication of slink, and the potato's tree are just link to slink.
And each time a new application is generated to potato the link to this become a new file. So if this is true, why using slink+potato but not just potato in apt-source? in fact i understood that if someone is using slink + some potatos it is usefull but with apt that make an auto upgrade it is really dangerous. I ask this because i want to have a new computer with slink+some_potatos