If you are a non-Supervisor: categorizing is one of the easiest tasks to do and does not take much time. Flags would be the second best option since most flags are simple and you get points for removing the flag and editing the answer to fix it.
For Supervisors: Batch Recategorization is the most efficient way to get a lot of contributions. Again, flags would also be a good option. Batch Revert is also a good option but most times it is not appropriate to use this.
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It is considered a fair amount. Many users contribute once or twice and then leave, so 100 contributions tell us that you are active on the site.
step 1 categorise step 2 answer a lot of questions step 3 ask a lot of questions this might sound like alot but its simple way.
You can't
Answer questions.
Its not
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200,000 contributions
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