Their software is plenty good enough and it's cheap -- particularly their starter options, which are in the neighborhood of 10 users for $10 per year. Everythi

Their software is plenty good enough and it's cheap -- particularly their starter options, which are in the neighborhood of 10 users for $10 per year. Everything installs and runs easily (usually "untar and run the startup script") and it all integrates together easily (i.e., give product X the URL to product Y) and deeply. That's what gets people hooked.