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As a general rule of thumb, use of For in Mathematica is considered something of an AntiPattern and is often a "hint" that using Map, Table, or some other more functional approach could be used. But there's no need to stress over it if the code runs (offers a service via a well defined function interface).
One way of tracking it if you are using Wolfram Workbench based on Eclipse IDE is to include a trailing comment like this:
For .... (*TODO:NoFor*)
You can then, if you wish, easily find such For usages and tackle them later.