A couple of days ago I was thinking about why people hide their EXIF data on the pictures they upload into Flickr. If it’s about privacy, I don’t see any data that could be a threat to your privacy.
For example, look at this picture EXIF data
The only personal information is my name and website. Well, that data is in there because I just decided to put it in there. I could choose a fake name and all the EXIF data won’t be even related to me. The rest of the data is just technical and it can be a great source of information for other photographers.
I don’t criticize people for hiding EXIF data, it’s your choice but I suggest you to think about it and the meaning of that tech data. For example, in this post by Scott Bourne he explains why he hides EXIF data. In his post you can get a different approach about why to hide EXIF data.

Personally I think that if you share pictures just to promote yourself, like a portfolio and your digital photographer life just exists for the purpose to spread the voice about your work as a marketing tool. Well, I understand that you don’t care about EXIF data and it’s easier to hide it and even forget that it exists.
But, if one part of your digital photographer life is about to share knowledge, exchange ideas and get in contact with other photographers, hiding such information is in direct contraction with the idea of sharing knowledge. I like to see which camera was used to take a picture, which lenses were used, at what time it was taken, an so forth. Not because I’m curious but because I want to see details, like focusing, sharpening, colors, dynamic range and many other things a photo geek cares about. That’s the reason I don’t hide my EXIF data, because I think that there is people out there interested to check those details. I’m sharing my knowledge and experience here, so why not share also tech stuff?