Perhaps a good way to increase SafeCoin recycling rate is to offer extra redundancy at a price. I’ve been thinking a lot about SafeCoin and the MaidSafe cloud storage service lately, and I’m getting more and more convinced that bandwidth is going to become a very significant factor, perhaps even more significant than storage space itself.
I’m not sure if the network already works this way, but since by default every slice of data is stored in 4 different locations on the network, when downloading a data slice the client could connect to all 4 vaults at the same time and request different chunks of data of that slice from every vault. The client could thus get a download speed equal to the upload speeds of the 4 vaults combined. Following from this, if data would be stored in 8 different locations instead of 4, the client would theoretically get double download speeds.
In addition to higher download speeds, the data would be even safer through the extra redundancy. Even if significant parts of the network would suddenly fail for whatever reason, the odds that at least one copy of every slice survives is significantly higher when 8 copies exist than when there are only 4.
For the average user and smaller files the default of 4 copies with a relatively low download speed is enough, but I can imagine rich/corporate users would be willing to pay for more redundancy and better download speeds.
Perhaps this source of SafeCoin recycling could be enough, allowing the network to give virtually unlimited storage to everyone, but charging extra for better speeds and extra redundancy. More recycling -> bigger farming rewards -> more farmers/vaults -> more storage space.