Goat Rodeo Cowboy said:
Though many LPFMs do exactly this.... LPFM was never intended to be used by me and my brother-in-law to pretend we are a not-for-profit community organization while really just squeezing in our dream of a traditional commercial radio station the way we dreamed it should be done because we are so much smarter that the people who are hogging the available commercial channels.
It's interesting to study the success and failure of various LPFM stations. Aaron shared some valuable insight on WHWS-LP, which makes perfect sense given its location and staffing.
Another LPFM which seems to be "hanging in there" is WXOJ-LP (aka Valley Free Radio) in west-central Mass. Checking their blog, it looks like they were off the air for a while, but they try to maintain a fairly consistent schedule:
http://www.valleyfreeradio.org/filed/latest-station-news/
On the other hand, I question whether the closest LPFM to my southeast PA base, WLRI-LP (I guess that's the current callsign, if they haven't changed it for the 20th time) actually exists on the FM dial. I tune to 92.9 most every time I drive through Gap, PA and hear nothing but distant signals from Wilkes-Barre and Dover. The station website looks good these days, but the "live stream" is several days old:
http://www.mywlri.com/
For the most part, WNAR-LP in Arcade appears to be a Seventh-Day Adventist satellite repeater -- I'll need to confirm this next time I'm in that area:
http://wnarlp.org/
Then we have a growing list of LPFMs which have gone silent, such as WQDD-FM in Girardville, PA which told the FCC last March that the transmitter building was flooded out. AFAIK, they're still off -- but with 60 watts at 77 meters below average terrain in a depressed former coal mining town, their chances weren't good to begin with.
Also, WXND-LP in Etna, NH seems to be gone for good:
http://en.wikipedia.org/wiki/WXND-LP
WXND had a very good signal for an LPFM: 51 watts ERP from the summit of Moose Mountain, with a clear shot into the "upper valley", including Hanover, NH. I hiked up to that site several years ago and found WXND co-located with NH Public Radio's Hanover station. But with an HAAT greater than 300 meters, the FCC shouldn't have allowed WXND so much power; the normal LPFM limit would be 1 watt! Apparently, someone screwed up in granting that CP, which may explain why the station is now deleted.