Registering a new tag / using SO-infrastructure for own project's Q/A
27739
Is it okay to use Stack Overflow as the support forum for a product or project?
126712
How can we prevent "assembly" tag being tagged to .NET assembly question
79528
Subscribe to tags I am interested in?
56900
How do users get started on new Stack Exchange sites?
21182
Is it okay to add id/class to  tag?
87471
Can I automatically add a new host to known_hosts?
118095
Let any site onebox with  tags
147570
Mark questions as duplicate of tag wiki
12027
Is a tag edit substantial enough?
19435
Can I use the Stack Exchange concept in my own sites?
137734
Why doesn't Stack Overflow require registration?
124072
Do I need to disclose my affiliation on non-promotional, technical answers on my project
100309
Custom tags with Doxygen
100183
Unifying descriptions for all tags across SE sites?
64069
Allow creating new tags with mobile app
82922
Is it allowed to use other tags inside ?
135204
Add a new repository to software sources