What is open-source? Open-source software a big tech player
"It's open-source software, a wide spectrum of programs developed not under the lock and key of a single company but by the communal efforts of volunteers who often start with little more than common interests and e-mail discussion groups."
Email newsletters Targeted Email Newsletters Show Continued Strength (Jakob Nielsen)
"E-newsletters that are informative, convenient, and timely are often preferred over other media. However, a new study found that only 11% of newsletters were read thoroughly, so layout and content scannability are paramount."