OK, I'll try to give some more light to disputed names.
OWSE.com
Owse \Owse\ (ouz), Owser \Ow"ser\ (ou"z[~e]r), n.
Tanner's ooze. See {Ooze}
And yes, the main intention is for an acronym.
caffs.com
= cafes
dhals.com
(veg.)Food. Produced in India.
jibing.com
related to sailing, surfing...
maills.com
"mail is the Scots word for rent; maills and duties were the yearly rents of an estate due in money or grain."
"Maills and duties is a common law diligence of long-standing which may be used by a creditor holding a heritable security over property which is leased. "
Sarce.net
=sarcenet or sarsenet, a fine soft silk material used esp. for linings.
bastio.net
=bastionet, a small type of bastion attached to the salient angle of a bastion. Used in several languages.