Knowledge and Development: The technology communities hold immense knowledge and resource bases. One could learn new skills, perhaps about other technologies also, and keep updated about the latest happenings in the industry.
Networking: Contact with people working in technology opens all doors for new ventures, collaborations, and mentorship relations.
Career Advancement: The strong network and skill showcase within the tech communities will have ample reason to help you get career advancement into your dream job.
Problem-solving: In technical communities, one finds a very responsive environment to seek help for complex problem-solving and to work in a team.
Inspiration: Getting to know other people in different professional fields helps people get inspired and move forward in their careers too.