Some guys, dont have answers of the thread , then they look up-down and suggest some words matching from up-down replies , then they place their reply.
If you don't know what you're saying then don't say it! if people want to contribute to a topic,but know nothing about it, then they should learn through study, rather than try to "make up" a response just to get a link.
someone else will probably always know the correct answer and more often then not will tear them to shreds for MISINFORMATION.
So , actually those who have knowledge gives app. correct answers , and there reward is backlink.
No actually, i've barely noticed anyone WITH a link that has provided a correct answer. the members WITHOUT a link generally provide help and advice as a service, rather than to direct someone to their site. IMHO if you want to help someone with a problem, help them, but dont do it only for a "reward" thats just rubbish.
so , moderators have to look in-appropriate answers and then remove them.
the spam is bad enough to deal with, then you've got the douchebags who don't even understand the question, and the ones that copy n paste from google/wikipedia. alternatively to the mods doing all the work, hows about just simply posts that are decent in their content and not spammy drivel?
is that really too hard?