The image of a black hole "sucking" things in like a vacuum cleaner is hugely incorrect. I think this perception comes about from the funnel image we often see representing black holes.
But I greet the new legend about Russians that just born here!
The term "frozen star" has certainly been used for black holes. If you Google both terms you'll find an article from 1971 called "Introducing the black hole", by Ruffini and Wheeler, which mentions that term. (It doesn't say anything about Russian obscenities, though.)
But the paper you quoted does seem to explain the logic for this term's existence:
"The resulting system has been variously termed “continuing collapse,” a “frozen star,” and a “black hole.” Each name emphasizes a different aspect of the collapsing system. The collapse is continuing because even after an infinite time, as measured by a distant observer, the collapse is still not complete. Rather, the departure from a static configuration of Schwarzschild radius r=2m as seen by a distant observer diminishes exponentially in time, with a characteristic time of the order of 2m, or about 10 microseconds for an object of one solar mass. The box explains the purely geometrical system of units employed in general relativity. In this sense, the system is a “frozen star.”
In another sense, the system is not frozen at all. On the contrary, the dimensions shrink to indefinitely small values in a finite and very short proper time for an observer moving with the collapsing matter (see figure 3). Moreover, a spherical system appears black from outside; no light can escape. Light shot at it falls in. A particle shot at it falls in.
A “meter stick” would be let down in vain to measure the dimensions of the object. The stick is pulled to pieces by tidal forces, and the broken-off pieces fall in without a trace. In these senses, the system is a black hole"
So this seems to be an international term, and indeed both the Russian wikipedia http://ru.wikipedia.org/wiki/%D0%A7%D1%91%D1%80%D0%BD%D0%B0%... and English-language one mention it.
Couple of other hits in search do mention that the term was used in 1960s - which probably explains the reason why it does sound a bit strange :-)
Anyway, it was fun to do this little investigation, thanks!
TL;DR: blackhole mergers are really rare, because one often kicks the other out.
with that being said, it would seem to me that yes, black holes can move, our milky way is not stationary, and black holes have been known to have very fast rotation speeds.
On a related note, I never understood how a black hole (or frozen stars like the Russians call them) could potentially orbit or be swallowed by another black hole. If they "infinitely" deform space-time, shouldn't they be unable to move at all? If time stands still past the event horizon as they say and they also rip the space-time fabric so much, they shouldn't be able to "get out of the hole". This is just too mind-bogging for me I guess.