That probably won't happen for a while. Check the time frame on this:
http://en.wikipedia.org/wiki/A_Message_From_Earth
It'd probably take us 600 years to say hi to anyone that might live on Kepler-22b. And another 600 years to get their response, assuming they did respond and immediately did so.
Until we find a way to send communications at a faster-than-light speed, I don't think we'll be doing any internet chats with aliens.
If you mean the visage on Mars, they already studied that and concluded that it's a natural formation, not artificial. Or perhaps you mean the canals, which were also studied and ruled as natural. You'd have to be more specific on what 'strange' thing you mean, and make sure it hasn't already been researched and dismissed as natural.