sigh  P411 is down again  

As far as I've seen over the  years, the date of last logging in on p411 seems to be accurate.  Many ladies are anti-review now, so it wouldn't be unusual to be active on p411 and not have new reviews or even listed on TER.  Many have website links on P411 as well, so you might be able to check more on them individually.  I don't think I've seen a listing on p411 inactive more than 6 months, so I think but don't know for sure that they disappear from too much inactivity.

One of my favorite ladies disappeared about a year and a half ago. Her account is still there on P411 although it's in a "inactive" status.