An Offer You Can't Not Refuse

On a mailing list, received today:

From: XXX 

Subject: Seeking Technical Co-Founder  

I'm working part-time with XXX, an early-stage start-up providing an activity-planning and metrics-gathering platform for hospitality and tourism organizations. XXX is looking for a technical co-founder to join the team initially in a part-time, equity-based capacity.  The co-founder should have experience with mobile and web development, including in a LAMP environment, and be able to contribute in both hands-on and strategic fashion. 

If you or someone you know might be a fit or you would like more information, you can contact the CEO XXX directly at XXX

Not only will you not pay anything, and not contribute anything, you're still using PHP.  (Actually, more likely, you just don't know WTF a "LAMP environment" is.)