I don't think that this find is actually anything of substance.

Using the same logic if an alien came to earth to study us it will not disclose being an alien for obvious reasons so in theory if you take the probability that there is inteliigent life out there and some of it may be more ancient than us we could have aliens here already studying us.

There was a news report on the bbc site about inconsistent flickering from a star maybe the same as this and someone theorised a large number of comets but it could also be planetary collisions. There may be star systems with an absolute huge number of planets compared to ours and planetary collisions are common.

Our technology while amazing to us is still pretty primitive. In a 1000 years from now someone may discover that there are particles that travel far faster than light and are used for communication across the universe. They will realise the universe is full of communication already.

I agree.

Im just tired of signs of water on planets, some weird sound signal, blurred photos of what could be anything etc...

Would just be interesting to actually see something.

It might be, but it's maybe something natural - IIRC, pulsars were discovered that way, they also thougth it might be sign of aliens at first.

It's only a matter of time, I can't imagine anybody can look at you with a straight face and tell you that in the millions/billions of solar systems/galaxies, there isn't another form of life advanced enough to communicate.

It would be almost impossible that there's not alien life forms out there. Now, what keeps me worried is this. What if the first alien life form we stablish contact with is hostile? (If we ever make contact). I'm not saying that we're a peaceful species (we're definitely not). But we can probably be vastly underpowered.

I'm more concerned by the diseases they carry than their weapons

Any diseases they carry would have evolved specifically around their biology, it would be surprising if it would be effective against humans.

Yeah, that's true. Some "flu" for them could be the end of our species. I think I see too much Star Trek xD.

We don't even know how big the universe is, so how could we think that are the only ones