I suppose if ... GGJstudios gave the advice, I might gird my loins and take a shot.
Not me! I don't trust that guy!
My only point is that longevity does not guarantee knowledge, and that a post, technical or more social, be judged on it's merits.
I agree in principle, but many who join are just learning how to use a computer, while many join with a wealth of knowledge and experience already acquired. I had decades of computer experience but was relatively new to Mac OS X when I first discovered this forum. The challenge is that there's no way to know what a poster knows until they've been around a while and have a history of posts to use as a reference.
When someone has been an active member for a while, chances are higher that they've learned a few things by reading the forum. Also, if they've posted misinformation, chances are high that they've been corrected, learning from other members. In other words, it takes time to develop a reputation for offering accurate information and sound advice. The disadvantage with a newbie is you don't know what they know and what they don't until they've posted for a while.
As a result, I make no assumptions about what a poster knows until I've seen them post for a while. I would certainly consider their posts, but
Kilamite said, I'd wait for some confirmation by trusted members or do my own research before following some recommendations made by someone who just joined.
Regarding the spam issue, the best thing to do is just report them when you see them. The mods are pretty quick about shutting down spammers, but there are some times when there doesn't appear to be any mods online. They always take care of it as soon as they're able, though.