Poor naming, in my opinion. Don't be surprised to receive a letter from LinkedIn's legal team. I suggest renaming the project ASAP to avoid any potential trademark-related issues.
That's pretty ridiculous. If Microsoft complained about this I would lose a lot of respect for them. This doesn't threaten linked in whatsoever. What other names can't be used because linked in exists? The possibilities are endless.
Ridiculous? It seems that you are not familiar with "trademark likelihood of confusion" and similar concepts (see the U.S. Trademark Act, especially 15 U.S.C. ยง1052).
Sorry, it was not my intention to bounce off the LinkedIn brand. Also I have no plans to build a product or brand out of this. Thanks for your warning, but with the information I currently have following up on it seems a bit extreme.
No need to apologize, it was just a friendly "better safe, then sorry" warning (not sure why it was downvoted). Anyway, you're welcome. If you have no serious product/brand plans, perhaps, you have nothing to worry about.