Moparts began on Jan 19 2003. They have 19,479 members as of this post.
FABO began on May 12, 2004, FBBO on June 28, 2008 and FEBO on Dec 21, 2008. They have 15,056, 3,381 and 1,287 members respectively for a total of 19,724 members on our network.
To summarize, Moparts is more then a year older then FABO is and more then 5 years older then FBBO and FEBO... Yet, the three sites combined now have more members then Moparts. Between the three sites we get more then 2 million page views per month, and more then 50,000 new posts every month. I say that's already a pretty big statement.
Now, I dont really like to criticize other websites publically. But many seem to have the same opinion of moparts. That's their doing.
I prefer a positive approach. Dont put moparts down. Its a waste of energy. Instead, build up our sites. Don't look to harass them, bring your friends here, and ask them to bring their friends. Post here often, and write meaningful tech threads. Stay positive.
Just my .02.