No. I understood you wanted to have fun coding something that would help others. It's cool; Thumbs up.
Your app isn't giving much advantage to the one bullied, actually. How would you know the char who hunted you yesterday and the one hunting you today is belonging to the same player or the same group of players?
The fact official groups are using it isn't giving much holyness to it, in my humble opinion.
Let's see... Note i use official factions names as examples only.
[LN] players use this app and marked LR- tag. Cool. They now don't have any effort to do to act against Liberty Rogues.
Why would they even log to patrol their ZOI, thus giving opportunities to others players to interract with them? Easier to just launch the app, mark who you want to interract with and be done with it, right?
With this, people just end up interracting mainly with people they -want- to interract with. Where did the random encounters fun go?
Now... Imagine LR- people marked [LN] tag as well. They won't log if they don't see [LN] online, because boring. [LN] won't log either because boring.
Well done. Nobody logs.
All this isn't helping in anyway to increase the fun of everyone playing. You just have your little interest circles. So do others. Everything out of those circles will just be ignored further, because why would people log when there is seemingly no one interesting to interract with?
Pirates : Let's just mark all lawfuls tags. Everytime they log, i will just F1 or leave their ZOI. Where the fun to rolleplay enforcing laws went?
To sumarize, I find this rather sad.
Looks like laziness, again, is rewarded. You end up being disaventaged if you don't use a stalking program. Your attempt to not metagame too much by using the online list just desserves you.