By Azmenen of Kargath

TalentSpecSpamFilter is an addon that consolidates the "learned/unlearned" information from 20 lines of ability-learning spam into condensed summaries. In other words, TalentSpecSpamFilter turns this
You have unlearned [Wild Growth].
You have unlearned [Tree of Life].
You have unlearned [Swiftmend].
You have unlearned [Meditation].
You have unlearned [Gift of Nature].
You have unlearned [Disentanglement].
You have learned a new ability: [Aggression].
You have learned a new ability: [Vengeance].
You have learned a new ability: [Mangle].
You have learned a new ability: [Mangle].
You have learned a new ability: [Feral Instinct].
You have learned a new ability: [Feral Charge].
You have learned a new ability: [Feral Charge].
You have learned a new ability: [Berserk].

into this
You have unlearned [Wild Growth], [Tree of Life], [Swiftmend], [Meditation], [Gift of Nature], [Disentanglement].
You have learned a new ability: [Aggression], [Vengeance], [Mangle], [Mangle], [Feral Instinct], [Feral Charge], [Feral Charge], [Berserk].

TalentSpecSpamFilter has no in-game config, and it doesn't need one. Just install it into your World of Warcraft AddOns folder, and it just works.