Not only do answers change, but so do opinions and experiences and devices and juices and recommendations.... Threads eventually expire (when a mod gets around to expiring them... usually when they are resurrected a year or two or three later by someone with the same or similar question).
ECF is in the content business. The users of ECF provide that content. The fresher the content and the more of it, the higher the search rankings for applicable and even just similar search terms and therefore the more traffic, the more members, the more vendors, and even higher paying advertisers (log out of your account - surf ECF while logged out and you will notice the advertising).
I do like the search feature and I have often on usenet and on other web forums pulled out the occasional LMGTFY link to make the point that search is important... but ECF treats their content differently than most other forums... and it's important for vendors who have sub-forums to maintain a friendly atmosphere where people help each other and genuinely like each other.
Very cerebrally well put!!!