The abbreviation SLAPP for "strategic lawsuit against public participation" was introduced in the 1990s by American researchers (Pring & Canan, 1996). It refers to a specific form of litigation, in which the plaintiff's purpose is not to win in court but to intimidate and silence the persons who are sued. SLAPPs are used by financially strong corporations, organisations and individuals in order to make it too costly for critics to continue with their criticism.SLAPP plaintiffs are usually aware that their case is legally meritless and that they have little chance of a legal victory. They do not attempt to make their case as strong as possible but to make it as costly, time-consuming and frightening as possible for the victim. Their strategy often includes false allegations, unreasonable demands for damages and attempts to stretch out the legal process as far as possible. By making the potential financial and psychological costs as high as possible, the plaintiff can often obtain an out-of-court settlement that silences a critic. In some countries, it can be forbiddingly costly to fight a SLAPP in court, even if one wins the case (Anon., 2010).The term SLAPP has predominantly been used about litigation directed against media outlets, non-governmental organisations (NGOs), individual journalists and activists, and scientists reaching out to the public. It has been less clear whether the SLAPP term also covers the use of this litigation strategy against scientists communicating with other scientists (Kuehn, 2004, p. 363). This is unfortunate since scientific communication is in no less need of protection against misuse of the court system than communication in public media.