I'm a minister and I like AFF because its the voice of common people. At church everyone is getting along, and rarely if ever does anyone question what was/is preached within the framework of the local church.
On AFF people have respect for others, but no regard for their posistions. There are plenty of pastors, preachers, and lay leaders on AFF, so posistions don't matter to posters. It's not about titles, it's about DO YOU HAVE BIBLE TO BACK UP WHAT YOU SAY?
Also, you get posters who have left and openly discuss issues that were influential in their decision to leave the church.
As for influencing my beliefs, I would say AFF does not, however I would mention that it has caused me to at least study subjects I would otherwise have not had much exposure to and considerably better debate than I would be able to find in person.(preterism, universal reconciliation, etc.) And helped me to refine things I was already in the process of re-evaluating (such as my stance on outward holiness, which I still believe, but not as salvic). As well as given me oppertunity to speak on topics that are absolutely taboo in "real life" fellowship among churches all to often (such as tithing).
I enjoy AFF. I don't like some aspects of AFF, posters who absolutely are not apostolic, don't claim to be, and don't want to be, and really don't even believe in the Bible, or God in general. But the good (debates) outweigh the bad.
Finally, alot of us here are Bible nuts. I can't go to work and go to lunch and bring up the topics of outward holiness, tithing, Godhead, etc. I witness as the door opens, but with AFF, you can simply talk religion, or have intersting debates any time of day.
AFF