The
Claymore time skip was done really well i thought. I enjoyed it quite a bit.
But with some other series it seems to degrade in quality after a timeskip, like
Naruto (which I no longer read) and
One Piece. One Piece is getting back on track, though. I just found the reunion was done in a very cliche manner.
Bleach's time skip is the reason i went back to it, hoping it would be able to revert to the quality of a few years ago. Eventually I was disappoint.
The problem with some time-skips is how not much has changed in that period when common sense indicates it should, be it characterization or world events (thinking Naruto here). I liked how, in Claymore,
Spoiler (mouse over to view)
most of the main characters were out of the loop along with the reader, it seemed less awkward like this, and the time-skip was used to refocus who the main characters are and introduce new characters
. The former also happened in One Piece.
EDIT: In short, I voted "I don't care" because it's done well, sometimes not.
EDIT 2: Just a note on the length of the time-skips I mentioned
Claymore -
Spoiler (mouse over to view)
7 years
Bleach - Don't remember, I think around
Spoiler (mouse over to view)
7 months
One Piece -
Spoiler (mouse over to view)
2 years
Naruto -
Spoiler (mouse over to view)
3 years (in manga, in anime 2.5)
Not sure what the minimum length we're talking about here is. 6 months? Perhaps it depends ont eh context. I dimly remember there was a time-skip in the DBZ part of Dragonball where they train for a year (?) for the arrival of Vegeta and Nappa, but it's not like there was any changes in the world during that time so I personally wouldn't count that.