diff --git a/resources/text/CHANGELOG b/resources/text/CHANGELOG
index 84533097e..9d148e3df 100755
--- a/resources/text/CHANGELOG
+++ b/resources/text/CHANGELOG
@@ -5,6 +5,7 @@ Added:
 
 ▪ Background color of notifications is now changeable. (issue #134)
 ▪ Auto-update setting of individual Tiny Tiny RSS feeds can now be changed.
+▪ RSS Guard is now useable as external RSS reader by common web browsers like Firefox etc. (issue #135)
 
 3.0.0
 —————
diff --git a/src/main.cpp b/src/main.cpp
index eb23d82c4..a5667f0cb 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -66,8 +66,10 @@ int main(int argc, char *argv[]) {
   Application application(APP_LOW_NAME, argc, argv);
   qDebug("Instantiated Application class.");
 
+  // TODO: dat '\n' do konstant
+
   // Check if another instance is running.
-  if (application.sendMessage(APP_IS_RUNNING)) {
+  if (application.sendMessage((QStringList() << APP_IS_RUNNING << application.arguments().mid(1)).join('\n'))) {
     qWarning("Another instance of the application is already running. Notifying it.");
     return EXIT_FAILURE;
   }
diff --git a/src/miscellaneous/application.cpp b/src/miscellaneous/application.cpp
index 0ff6edeae..b1ede783a 100755
--- a/src/miscellaneous/application.cpp
+++ b/src/miscellaneous/application.cpp
@@ -29,6 +29,7 @@
 #include "adblock/adblockmanager.h"
 
 #include "services/abstract/serviceroot.h"
+#include "services/standard/standardserviceroot.h"
 #include "services/standard/standardserviceentrypoint.h"
 #include "services/tt-rss/ttrssserviceentrypoint.h"
 
@@ -158,12 +159,30 @@ void Application::restoreDatabaseSettings(bool restore_database, bool restore_se
 void Application::processExecutionMessage(const QString &message) {
   qDebug("Received '%s' execution message from another application instance.", qPrintable(message));
 
-  if (message == APP_IS_RUNNING) {
-    showGuiMessage(APP_NAME, tr("Application is already running."), QSystemTrayIcon::Information);
-    mainForm()->display();
-  }
-  else if (message == APP_QUIT_INSTANCE) {
-    quit();
+  // TODO: dat '\n' do konstant a taky "feed:"
+
+  foreach (QString msg,  message.split('\n')) {
+    if (msg == APP_IS_RUNNING) {
+      showGuiMessage(APP_NAME, tr("Application is already running."), QSystemTrayIcon::Information);
+      mainForm()->display();
+    }
+    else if (msg == APP_QUIT_INSTANCE) {
+      quit();
+    }
+    else if (msg.startsWith(QL1S("feed:"))) {
+      // Application was running, and someone wants to add new feed.
+      StandardServiceRoot *root = qApp->mainForm()->tabWidget()->feedMessageViewer()->feedsView()->sourceModel()->standardServiceRoot();
+
+      if (root != NULL) {
+        root->checkArgumentForFeedAdding(msg);
+      }
+      else {
+        showGuiMessage(tr("Cannot add feed"),
+                       tr("Feed cannot be added because standard RSS/ATOM account is not enabled."),
+                       QSystemTrayIcon::Warning, qApp->mainForm(),
+                       true);
+      }
+    }
   }
 }
 
diff --git a/src/services/standard/standardserviceroot.cpp b/src/services/standard/standardserviceroot.cpp
index 8fa26db42..5ee6f22c5 100755
--- a/src/services/standard/standardserviceroot.cpp
+++ b/src/services/standard/standardserviceroot.cpp
@@ -41,6 +41,7 @@
 #include <QAction>
 #include <QPointer>
 #include <QSqlTableModel>
+#include <QClipboard>
 
 
 StandardServiceRoot::StandardServiceRoot(RootItem *parent)
@@ -95,6 +96,8 @@ void StandardServiceRoot::start() {
       }
     }
   }
+
+  checkArgumentsForFeedAdding();
 }
 
 void StandardServiceRoot::stop() {
@@ -296,6 +299,19 @@ void StandardServiceRoot::loadFromDatabase(){
   m_recycleBin->updateCounts(true);
 }
 
+void StandardServiceRoot::checkArgumentsForFeedAdding() {
+  foreach (QString arg, qApp->arguments().mid(1)) {
+    checkArgumentForFeedAdding(arg);
+  }
+}
+
+void StandardServiceRoot::checkArgumentForFeedAdding(const QString &argument) {
+  if (argument.startsWith(QL1S("feed:"))) {
+    qApp->clipboard()->setText(argument);
+    addNewFeed();
+  }
+}
+
 QList<StandardCategory*> StandardServiceRoot::allCategories() {
   QList<Category*> cats = getSubTreeCategories();
   QList<StandardCategory*> std_cats;
diff --git a/src/services/standard/standardserviceroot.h b/src/services/standard/standardserviceroot.h
index 95425dc20..bfb43b461 100755
--- a/src/services/standard/standardserviceroot.h
+++ b/src/services/standard/standardserviceroot.h
@@ -95,6 +95,7 @@ class StandardServiceRoot : public ServiceRoot {
     bool cleanFeeds(QList<Feed*> items, bool clean_read_only);
 
     void loadFromDatabase();
+    void checkArgumentForFeedAdding(const QString &argument);
 
   public slots:
     void addNewCategory();
@@ -103,6 +104,8 @@ class StandardServiceRoot : public ServiceRoot {
     void exportFeeds();
 
   private:
+    void checkArgumentsForFeedAdding();
+
     // Returns converted ids of given feeds
     // which are suitable as IN clause for SQL queries.
     QStringList textualFeedIds(const QList<Feed *> &feeds);