They do it to piss you off! :/
I never un-fav anything, unless it's been removed.

I know, right!?

xD

I sometimes get a 'This favorite has been Removed by User' notification and it makes me wonder why I need to know that. I mean, you don't get a notification if someone unwatches you, and I know it happens as I often see my watch count drop by a number or two now and then.
I'm wondering, though - are the dropped favs due to inactive accounts being deleted? Perhaps not someone saying "I don't like this guy's stuff anymore - gonna drop those favs" but maybe an entire, long inactive account vanishing altogether? Or someone might be copying pics from his fav list onto his HD to make the fav list easier to navigate? I dunno... but don't take it personally or let it bug you.
In other news, meerkats are soft.

Yes, they are soft...

*hugs one from his collection*

I never remove faves - unless an artist deletes them. That seems to happen to about 10 to 20 of my faves per month. I've learned to always save everything that I fave, so I can still enjoy it.

hehe ;) I love the new icon, when did you get that made?

Like it?

 rilin made it for me!

I'm going to be cleaning out all my galleries, faves, scraps, etc.

Not because I hate you, just to clean things.

Because there's just too much cute in the fave lists, and if they stayed any longer they'd be in danger of an overload meltdown.