I've been following SETI for over a decade, infact well before the project even got started. I've not been contributing much lately, but might try and improve on that a little.
Thoughts about SETI and SETI@home
I think its entirely possible that other intelligent civilisations inhabit the universe and even share our galaxy. I think it would be incredibly exciting if we discovered a signal from such a civilisation, even if we had no idea what it was. Just to know for sure that others are out there would be amazingly profound. ANd for that reason alone I support what SETI are doing! Keep up the good work.