I may be too self-centred and making up reasons, but IMO this is so that scammers can break into WoT. I.e., have a few "harmless" follow bots liking everybody's content, get a few folks to follow them back, and hence obtain write access to WoT relays. On most relays, three followers in the WoT are enough. Then use these harmless accounts to follow the "Tinas", "I have a bitcoin-related proposition for a select group of investors", and "Bitcoin Girl ready for action" pubkeys and Bob's your uncle... Access to almost all big WoT relays until the relay operator manually blacklists these pubkeys. Then you just start over with new follower bots.