We have just added this functionality to Yahoo! GeoPlanet via the $and filter. This filter allows users to combine both a place name filter and a place type filter for the /places collection. The $and filter takes two arguments that are filters themselves. Here is an example:
$and(.q(Long+Island),.type(Town))
For a full example, please read
New GeoPlanet Features or the
GeoPlanet documentation.
Eddie Babcock
Yahoo! Geo