I'm on the board of LETSLink (which has been trying over many years to keep the LETS flag flying) and have always been very interested in how different types of currency operate.

There's a big difference between the different motivations (for profit/commercial; not for profit/social; charitable) for these 'Peer to Peer' or people-based 'credit clearing' systems which enable goods and services to circulate, and productive assets to be created.

'Peer to Asset' investment in productive assets - which is currently conducted via the owner of the asset - is another thing entirely.

"Any economic unit can emit money. The serious problem is to get it accepted" Hyman Minsky