It is not ok, the buff specifically list a time when they are supposed to expire and they do not.
For example, here is what the valentines buff said,
There are still people running the Valentine's buff. No, it's not their fault really, and clearly a programming oversight, but these buffs are not something you are supposed to have year round. The buff is supposed to be gone whether you were on holiday or not, but it's not. Heck, I know people still running the milk and cookie buff from Christmas (some on main accounts and some using alt accounts to help feed troops).Quote:
A gift from your friends during Valentine's Day. Use it to get a 24 hours 50% upkeep buff in ALL your cities from Feb 12th to Feb 16th. Cupid's Chocolates are stackable (meaning if you already have htis buff, using it again will add a further 24 hours). Once Feb 17th comes though, this buff will expire if you haven't used it yet.

