Too long did not read
An acronym used on Internet forums. When someone writes too much in their post, and you simply cannot be bothered with reading it all, you just respond to their post with "TLDNR."
Poster A: (lots of text)
Poster B: tldnr
Prices shown in USD.
邮件由 email@example.com 发出。我们决不会发送垃圾邮件。