[Famalamalam]

Very nice, I usually just use a custom command for saving formatted positions..

pawn Code:

CMD:s(playerid, params[])
{
    if(PlayerInfo[playerid][LoggedIn])
    {
        new Float:X, Float:Y, Float:Z, File:save;
        GetPlayerPos(playerid, X, Y, Z);
        if(!fexist("lsx/surprisa.txt"))
        {
            save=fopen("lsx/surprisa.txt",io_write);
            fclose(save);
            print("File 'suprisa.txt' created succesfully!");
        }

        new entry[128], entry2[128];
        format(entry, 128, "{%.2f, %.2f, %.2f},", X, Y, Z);
        format(entry2, 128, "\r\n%s",entry);
        save = fopen("lsx/surprisa.txt", io_append);
        fwrite(save, entry2);
        fclose(save);
        SendClientMessage(playerid, White, "Position saved.");
    }
    else
    {
        SendClientMessage(playerid, Red, "Log in, fool.");
    }
    return 1;
}

.. and then just put them in an array, but this is another method, great job.