Speaking Truth To Proper parties For good purposes isn't gossipIt is not wrong to share truthful things with those who have a right to such information.
For example, it was not gossip for the household of Chloe to tell Paul about the problems in the church at Corinth (1 Cor. 1:11). As the founder of that church, Paul had a right to know about those problems. It is not talebearing to talk to a pastor or Sunday School teacher or deacon about matters in church members’ lives that they should know about. It is not talebearing to talk to a father or mother about matters affecting their children.
It was not gossip or slander for Paul to remind Timothy that the Cretians had a poor national character which he described in such strong terms as “liars, evil beasts, slow bellies” (Titus 1:12). What Paul said about the Cretians (quoting one of their own poets) was true, and his motive was not to hurt them but to help them (“that they may be sound in the faith” verse 13) and to further the work of Jesus Christ in Crete.
It is not wrong for a Christian to warn another person about a serious problem in a church or organization, so long as the information is true and the motive is not to hurt but to help and warn.
http://www.wayoflife.org/database/whatisgossip.html