  CoRoT-7 b, a planet about 70% larger than the Earth orbiting a Sun-like star,
is the first-discovered rocky exoplanet, and hence has been dubbed a
"super-Earth". Some initial studies suggested that since the planet is so close
to its host star, it receives enough insolation to partially melt its surface.
However, these past studies failed to take into consideration the role that
tides may play in this system. Even if the planet's eccentricity has always
been zero, we show that tidal decay of semi-major axis could have been large
enough that the planet formed on a wider orbit which received less insolation.
Moreover, CoRoT-7 b could be tidally heated at a rate that dominates its
geophysics and drives extreme volcanism. In this case, CoRoT-7 b is a
"super-Io" that, like Jupiter's volcanic moon, is dominated by volcanism and
rapid resurfacing. Such heating could occur with an eccentricity of just 10^-5.
This small value could be driven by CoRoT-7 c if its own eccentricity is larger
than ~10^-4. CoRoT-7 b may be the first of a class of planetary super-Ios
likely to be revealed by the CoRoT and Kepler spacecraft.
