Both things require that Messenger needs to be patched. Either in memory (soft patch) or either on disk (hard patch). A hard patch is out of the question. Besides, you can find hard patches for both suggestions on
http://www.mess.be/
Soft patches (patching in memory) is possible, but also not done because of some reasons. But as I said, for both suggestions there are perfectly working hard patches.
For the first suggestion there are also Messenger Addons and Messenger Plus! plugins which can do the same...
suggestion 1) Take a look at "
CookieRevised's reply to how to sign in on appear offline?".
suggestion 2) Search
http://www.mess.be/ with "
polygamy" to find polygamy patches. And also take a look at "
CookieRevised's reply to JnrzLoader 6.1.0.211".
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