Blockchain size projections

[vikram]

For the current size, use the "disk_usage" command or just directly measure the dbs in your data directory.

[Chronos]

We all know Bitcoin blockchain continues to grow. Quickly approaching 30GB already. How does the BTS chain compare, in terms of longer-term extrapolations of current trends? I'm particularly interested in how the 10-second block timing and the on-chain exchange contribute to the total size.