Microsoft really should not be force downloading Microsoft Windows 10 on peoples computers without their consent. Some people might even think that was computer hacking.
Gnusocial is a twitter clone that you can host on your own server. Twitter can get bogged down and almost be unusable.
With Gnusocial you can limit the traffic and who can use the site. Your tweets will be heard by those who matter and you will not be inundated with advertising.
This circuit actually works to blink the led. The speed of the blinking depends on the parts. Personally I did not think it would work, but it does. The circuit is based on negative resistance.