Hi there Ballina Colonial,
We are only connected to Booking.com, wotif, booking button and bookeasy. I have often wondered about connecting to the others, hence why i asked the question< "who is connected to what OTAs?".
Like you, booking.com is definitely dominating the bookings. I have put that down to smart advertising...booking dot com booking dot yeah! I guess while they are not costing you money to stay with them, then no harm done. I wonder if the takeover of wotif by expedia will make any difference? I guess time will tell.