"Blockchain is full" is a very inaccurate and loaded thing to say. Blocks can be full, but the network's mempool is infinite in practical terms, limited mainly by the memory of the nodes running it. The mempool is not anywhere even 1GB so most nodes are able to handle the transactions. Further spam filtering is possible to reduce tx memory further.
This is a great site to get a good bird's eye view of recent blocks, the mempool, and how much of a fee you really need to get your transaction into the next block (if you're in a hurry): https://tradeblock.com/bitcoin
I'm for moderate scaling of Bitcoin. While I don't believe in BTC micropayments, a broader range of transactions are possible when they are cheaper.