Is taking pictures of existing objects and posting them online copyright infringement?

I don’t believe so. As long as these are photos you have taken and you have no intention to profit from those logos being in said photos, there should be no problem.

No you should be fine. I would not post someone else’s art or photos without attribution and permission though.

Even if it was infringement, you wouldn’t really get in trouble. If Google or eBay had a problem with it, and I doubt they would, they would probably just have their attorneys contact Facebook, send them a cease and desist letter and ask that they remove the images and Facebook would comply and that would be all that came of it. That’s the first step in infringement issues of that kind, before anyone gets in trouble.

Did you photoshop “Google Blows” or “eBay is for losers” onto your pics? Meh. Either way, you’re good.

I see many images on line with the owner’s logo superimposed on them to keep that from happening when they are used. So those images seem to be fair game and free advertisement for the owners.

As long as you’re not making bucks off the photos or profiting from them in any way, you’re safe.

One example of non-finanical profiting—When YouTube singers don’t explicitly say they song isn’t theirs, their covers get pulled- they’re not making money but they’re profiting through hits and attention. Just having them up on FB as photos won’t get you a lot of attention.

Actually, it is simply not the case that as long as you are not profiting off someone else’s copyrighted work or off someone else’s trademark that you can do whatever you want with the work or the trademark. Or that it is o.k. if you simply attribute the work to it’s copyright holder. There are certain circumstances under which you can use certain copyrighted works, generally small portions of it, and you will be fine, but in most cases, you need the permission of the copyright holder to do much of anything with copyrighted materials. Trademarks are separate issue.