In the BSD licenses, the trend has been toward the ‘simplified’ versions without the advertising clause, which are very similar to the MIT license. But it was t

In the BSD licenses, the trend has been toward the ‘simplified’ versions without the advertising clause, which are very similar to the MIT license. But it was the advertising clause that broke AT&T in their lawsuit against BSD, because AT&T had violated the advertising clause by promoting the inclusion of vi in System V without credit.