My website logs spit out "invalid content" messages -- they typically occur when someone types in a wrong hyperlink or a page has mistakenly changed URLs. Lately (about 20 times per day) I've been noticing a trend with these logs. It's probably best explained with an example:
Assuming a page URL is
http://www.myswebsite.com/news/1048/title-of-some-news-item, I will receive one of those log messages that says someone tried to visit something along the lines of
http://www.mywebsite.com/news/1048/titlee-of-some-news-itm or some variation that is incredibly close to the original slug, with just a few characters added, changed, or removed. The id (1048 in this case) is always the same.
I don't think people are mistake-prone enough to do this 20 times per day. Is this a bot? Is it common, and what are they trying to accomplish?