I have seen it happen a couple times already, posts that are unreadable (except through the BrickPicker app) because the URL has invalid encoding. The posts about chapters.ca or the 9525 are a good examples:

http://community.brickpicker.com/forum/52-canada/

It happens everytime the post's topic includes non-alphanumerical characters. In the HTML link, such characters have to be encoded by the % character followed by the two digits of their ASCII hexadecimal code.

Therefore $ becomes %24, % becomes %25, and so on. It would be great to fix this issue!

Okay, it looks like someone fixed the chapters.ca post by removing the % symbol from both the URL and the target page.

 

The one named "Canada - Walmart 9525Pre Vizsla's Mandalorianu2122 Fighter $25" remains broken.

I fixed that one now too.  The problem with some is that people paste in the words and it takes that TM as a superscript.  It seems that they have fixed this in the v4.0 that is coming out sometime soon.