Rafael Dohms has (re)osted an article of his that previous appeared in php|architect magazine about creating user groups for technology communities and how it relates to physics (well, vacuums at least).

Some developers may notice this absence of “particles” and interaction between them in their local area, this may even cause them enough of an itch that it needs to be scratched, and thus a User Group starts forming. But how hard is it to start a group? Can anyone do it? what really am I going to have to do to get all these particles into my vacuum and end this “empty space” in my region?

He offers some suggestions of things he's done in the past to help start up user groups including things like:

• Finding local developers interested in meeting up
• Spreading the word via coworkers/other companies using PHP
• Having more than just a "one man operation" running the group
• Looking for partners/sponsors for the group and its activities

Come join the fun, being in a user group and participating is a very good, professionally and personally, you are not just helping others, you are learning, teaching and expanding you set of tools.