Bitcoin Forum

If you are looking for a more effective way to getting good rating I suggest you should think about helping this forum by cleaning up spammers,till date we still have many rules breakers using multiple accounts and avoiding bans one way or the other so if you are good,kinda like a detective i think this is worth a short.

All you have to do is click on the spammers trust link on his or her profile to report and make sure you have good evidence against the users account.
OR
You can create a post on Accusation thread for moderators to check it out,remember with full evidence

This is not the right way to get merit.
Let me help you here.
If you find a spammer, what you do is to report his posts to a moderator, the will deal with the spammer, but you get no reward, only a positive "good" report.

If you run out of "good posts", better start reading the other's good posts so you learn something new and have a wider area where you can enter discussions on matters you understand. Then merit will come your way.
The more knowledge you acquire the more merit you can get.
If you are good enough in catching SCAMers then you are very useful for the community and probably will get some merit there.

Just don't push for merit, that's the best way to get merit. ;)

That is wrong. All you have to do is report spam posts and other posts that break the rules to the mods by clicking on the Report to moderator button that is available under every post.

Scam accusations are for members who have been scammed or have evidence of someone scamming. Those reports are not moderated by admins but id proven guilty scammers will get tagged and receive negative trust from DT members.

It looks like are confusing spammer with scammers here … In either case, reporting them is a community based service, free of charge, performed by any member of the forum.

Reporting spammers is for the most a silent action, performed by using the "report to moderator" on each post (see [Guide] Reporting effectively (https://bitcointalk.org/index.php?topic=4519248.0) for an overview on when and how to), and for the most, those reports are made without the need to post about it in the forum. I have make near to 1K reports (still short), and don’t recall having made a post about any individual case reported. On some occasions, there are initiatives that do make sense in terms of public posting, such as  CLUB]The SpamBusters! Keeping eye on the spammers for almost a year: [5.27.19] (https://bitcointalk.org/index.php?topic=4720640.msg42624261#msg42624261)), in an effort to report mass spamming that follow a given pattern and that are tacked by more than one person at a time. Some of these initiatives may be merited, but that is not the driver to create them, nor do they really get merited since the objective is to help clean the forum, not gain merits.

Then there is the scammer side to things (which is what you indicate in the second part of your OP). Reporting scammers is yet another community volunteer task in order to help others from being scammed. Again it is, for the most, not done to gain merits, although some good catches may be merited at some point.

Neither task should be merit driven really, nor do they generally render merits as a result.

Nobody should be looking for an effective way to get a "good rating", whatever that is. (Merit? Trust?) You should be focusing on learning about bitcoin and constructively contributing to conversations across the forum. If you are focusing on earning a "good rating", then it suggests you are only here to build your own reputation with a view to joining a signature campaign or pulling off risky/dubious/scammy trades.

Actions such as reporting rule breakers or flagging scammers should be done from an altruistic viewpoint for the general health of the forum, and not in the expectation of any reward.

If you are referring to ratings of trust from DT ("positive trust ratings"), you have to be proven a trustworthy person if you've made a successful trade with another user here. Like if you could have scammed your trading partner during a trade but you didn't. That's trust.
Getting trust ratings for detective work is rather an exception and only likely if you are a very well known scammer hunter. By doing so you prove to dedicate some work and time to the forum here and that's a sign that it's unlikely that you'll risk a well known account for scams.

And I think you've also confused spammers and scammers. Spammers are only annoying, you can report their posts to moderators by clicking "report to moderator" if you think the post breaks one of the rules (https://bitcointalk.org/index.php?topic=703657.0). Scammers are trying to steal money from others and if you think you've spotted a scammer you can create an accusation in Scam Accusations (https://bitcointalk.org/index.php?board=83.0). But make sure to have a strong evidence, otherwise you might get marked as liar.